FM / bin

/snap/core24/1643/usr/bin

Name	Size	Mode	Actions
aa-enabled	18744	0755	edit dl rm
aa-exec	18744	0755	edit dl rm
aa-features-abi	18736	0755	edit dl rm
addpart	14720	0755	edit dl rm
arch	35336	0755	edit dl rm
awk	170768	0755	edit dl rm
b2sum	55816	0755	edit dl rm
base32	39432	0755	edit dl rm
base64	39432	0755	edit dl rm
basename	35336	0755	edit dl rm
basenc	47624	0755	edit dl rm
bash	1446024	0755	edit dl rm
bashbug	6988	0755	edit dl rm
bunzip2	39296	0755	edit dl rm
busctl	96864	0755	edit dl rm
bzcat	39296	0755	edit dl rm
bzcmp	2225	0755	edit dl rm
bzdiff	2225	0755	edit dl rm
bzegrep	3775	0755	edit dl rm
bzexe	4893	0755	edit dl rm
bzfgrep	3775	0755	edit dl rm
bzgrep	3775	0755	edit dl rm
bzip2	39296	0755	edit dl rm
bzip2recover	18736	0755	edit dl rm
bzless	1297	0755	edit dl rm
bzmore	1297	0755	edit dl rm
captoinfo	92584	0755	edit dl rm
cat	39384	0755	edit dl rm
chage	72184	2755	edit dl rm
chardet	221	0755	edit dl rm
chardetect	221	0755	edit dl rm
chattr	14656	0755	edit dl rm
chcon	59912	0755	edit dl rm
chfn	72792	4755	edit dl rm
chgrp	59912	0755	edit dl rm
chmod	55816	0755	edit dl rm
choom	22912	0755	edit dl rm
chown	59912	0755	edit dl rm
chrt	31104	0755	edit dl rm
chsh	44760	4755	edit dl rm
cksum	104984	0755	edit dl rm
clear	14656	0755	edit dl rm
clear_console	14568	0755	edit dl rm
cloud-id	966	0755	edit dl rm
cloud-init	970	0755	edit dl rm
cloud-init-per	2108	0755	edit dl rm
cmp	43408	0755	edit dl rm
comm	39440	0755	edit dl rm
core-sshd-host-keygen	1521	0755	edit dl rm
coredumpctl	84648	0755	edit dl rm
cp	141848	0755	edit dl rm
csplit	51720	0755	edit dl rm
ctstat	23200	0755	edit dl rm
cut	39432	0755	edit dl rm
cvtsudoers	328808	0755	edit dl rm
dash	129784	0755	edit dl rm
date	109064	0755	edit dl rm
dbus-cleanup-sockets	14632	0755	edit dl rm
dbus-daemon	236176	0755	edit dl rm
dbus-monitor	26928	0755	edit dl rm
dbus-run-session	14640	0755	edit dl rm
dbus-send	31016	0755	edit dl rm
dbus-update-activation-environment	14632	0755	edit dl rm
dbus-uuidgen	14632	0755	edit dl rm
dd	72232	0755	edit dl rm
delpart	14720	0755	edit dl rm
df	89168	0755	edit dl rm
diff	137776	0755	edit dl rm
diff3	59920	0755	edit dl rm
dir	142312	0755	edit dl rm
dircolors	47632	0755	edit dl rm
dirname	35208	0755	edit dl rm
dmesg	70288	0755	edit dl rm
dnsdomainname	22760	0755	edit dl rm
domainname	22760	0755	edit dl rm
dpkg-deb	146000	0755	edit dl rm
dpkg-realpath	4185	0755	edit dl rm
du	100872	0755	edit dl rm
ec2metadata	8583	0755	edit dl rm
echo	35208	0755	edit dl rm
editor	1736392	0755	edit dl rm
egrep	41	0755	edit dl rm
env	48072	0755	edit dl rm
ex	1736392	0755	edit dl rm
expand	35360	0755	edit dl rm
expiry	27152	2755	edit dl rm
expr	43432	0755	edit dl rm
factor	64008	0755	edit dl rm
faillog	23168	0755	edit dl rm
fallocate	27008	0755	edit dl rm
false	26936	0755	edit dl rm
fgrep	41	0755	edit dl rm
finalrd	2112	0755	edit dl rm
find	204264	0755	edit dl rm
findmnt	69280	0755	edit dl rm
flock	23024	0755	edit dl rm
fmt	39432	0755	edit dl rm
fold	35336	0755	edit dl rm
free	27008	0755	edit dl rm
gdbserver	484728	0755	edit dl rm
getconf	26992	0755	edit dl rm
getent	39648	0755	edit dl rm
getopt	22912	0755	edit dl rm
gpasswd	76248	4755	edit dl rm
gpgv	310416	0755	edit dl rm
grep	186824	0755	edit dl rm
groups	35336	0755	edit dl rm
growpart	29895	0755	edit dl rm
gunzip	2346	0755	edit dl rm
gzexe	6447	0755	edit dl rm
gzip	93424	0755	edit dl rm
hardlink	47600	0755	edit dl rm
head	43528	0755	edit dl rm
hostid	35336	0755	edit dl rm
hostname	22760	0755	edit dl rm
hostnamectl	31184	0755	edit dl rm
i386	27288	0755	edit dl rm
iconv	68072	0755	edit dl rm
id	39432	0755	edit dl rm
infocmp	67968	0755	edit dl rm
infotocap	92584	0755	edit dl rm
install	145944	0755	edit dl rm
ionice	18816	0755	edit dl rm
ip	772920	0755	edit dl rm
ipcmk	22984	0755	edit dl rm
ipcrm	18816	0755	edit dl rm
ipcs	39296	0755	edit dl rm
iptables-xml	95176	0755	edit dl rm
ischroot	14824	0755	edit dl rm
join	51760	0755	edit dl rm
journalctl	80800	0755	edit dl rm
json-patch-jsondiff	1004	0755	edit dl rm
jsondiff	1004	0755	edit dl rm
jsonpatch	3859	0755	edit dl rm
jsonpointer	1838	0755	edit dl rm
jsonschema	213	0755	edit dl rm
kernel-install	55984	0755	edit dl rm
kill	22912	0755	edit dl rm
kmod	174328	0755	edit dl rm
kmodsign	18888	0755	edit dl rm
last	35200	0755	edit dl rm
lastb	35200	0755	edit dl rm
lastlog	28456	0755	edit dl rm
lcf	7784	0755	edit dl rm
ld.so	236616	0755	edit dl rm
ldd	5382	0755	edit dl rm
less	194952	0755	edit dl rm
lessecho	14656	0755	edit dl rm
lessfile	9047	0755	edit dl rm
lesskey	24272	0755	edit dl rm
lesspipe	9047	0755	edit dl rm
link	35336	0755	edit dl rm
linux32	27288	0755	edit dl rm
linux64	27288	0755	edit dl rm
ln	55816	0755	edit dl rm
lnstat	23200	0755	edit dl rm
locale	50824	0755	edit dl rm
locale-check	14488	0755	edit dl rm
localectl	27080	0755	edit dl rm
localedef	326752	0755	edit dl rm
logger	39904	0755	edit dl rm
login	53056	0755	edit dl rm
loginctl	68176	0755	edit dl rm
logname	35336	0755	edit dl rm
ls	142312	0755	edit dl rm
lsattr	14656	0755	edit dl rm
lsblk	149896	0755	edit dl rm
lscpu	113032	0755	edit dl rm
lsipc	51584	0755	edit dl rm
lslocks	31504	0755	edit dl rm
lslogins	51584	0755	edit dl rm
lsmem	39296	0755	edit dl rm
lsmod	174328	0755	edit dl rm
lsns	43400	0755	edit dl rm
man	128	0755	edit dl rm
mawk	170768	0755	edit dl rm
mcookie	27080	0755	edit dl rm
md5sum	39336	0755	edit dl rm
md5sum.textutils	39336	0755	edit dl rm
mesg	14720	0755	edit dl rm
mkdir	76296	0755	edit dl rm
mkfifo	43528	0755	edit dl rm
mknod	43528	0755	edit dl rm
mksquashfs	293832	0755	edit dl rm
mkswapfile	865	0755	edit dl rm
mktemp	35336	0755	edit dl rm
more	47496	0755	edit dl rm
mount	51584	4755	edit dl rm
mountpoint	18816	0755	edit dl rm
mv	137752	0755	edit dl rm
namei	22912	0755	edit dl rm
nawk	170768	0755	edit dl rm
nc	39560	0755	edit dl rm
nc.openbsd	39560	0755	edit dl rm
netcat	39560	0755	edit dl rm
networkctl	125520	0755	edit dl rm
newgrp	40664	4755	edit dl rm
nice	35336	0755	edit dl rm
nisdomainname	22760	0755	edit dl rm
nl	39528	0755	edit dl rm
nohup	35240	0755	edit dl rm
nproc	35336	0755	edit dl rm
nsenter	31336	0755	edit dl rm
nstat	31104	0755	edit dl rm
numfmt	59944	0755	edit dl rm
od	72200	0755	edit dl rm
openssl	1005368	0755	edit dl rm
p11-kit	211664	0755	edit dl rm
p11tool	223616	0755	edit dl rm
pager	194952	0755	edit dl rm
partx	63880	0755	edit dl rm
passwd	64152	4755	edit dl rm
paste	39336	0755	edit dl rm
pathchk	35336	0755	edit dl rm
pdb3	69459	0755	edit dl rm
pdb3.12	69459	0755	edit dl rm
pgrep	35296	0755	edit dl rm
pidof	26856	0755	edit dl rm
pidwait	35296	0755	edit dl rm
ping	89800	0755	edit dl rm
ping4	89800	0755	edit dl rm
ping6	89800	0755	edit dl rm
pinky	39336	0755	edit dl rm
pkaction	18736	0755	edit dl rm
pkcheck	22832	0755	edit dl rm
pkcs11-tool	189040	0755	edit dl rm
pkill	35296	0755	edit dl rm
pkttyagent	22832	0755	edit dl rm
pldd	22976	0755	edit dl rm
plymouth	47408	0755	edit dl rm
pmap	35224	0755	edit dl rm
pr	72272	0755	edit dl rm
printenv	35208	0755	edit dl rm
printf	55744	0755	edit dl rm
prlimit	27536	0755	edit dl rm
ps	146424	0755	edit dl rm
ptx	55848	0755	edit dl rm
pwd	35336	0755	edit dl rm
pwdx	14720	0755	edit dl rm
py3clean	7816	0755	edit dl rm
py3compile	13314	0755	edit dl rm
py3versions	12816	0755	edit dl rm
pydoc3	80	0755	edit dl rm
pydoc3.12	80	0755	edit dl rm
pygettext3	24224	0755	edit dl rm
pygettext3.12	24224	0755	edit dl rm
pyserial-miniterm	975	0755	edit dl rm
pyserial-ports	969	0755	edit dl rm
python3	8020928	0755	edit dl rm
python3.12	8020928	0755	edit dl rm
rbash	1446024	0755	edit dl rm
rdma	104976	0755	edit dl rm
readlink	43432	0755	edit dl rm
realpath	43432	0755	edit dl rm
rename.ul	22912	0755	edit dl rm
renice	14720	0755	edit dl rm
reset	26944	0755	edit dl rm
resizepart	22912	0755	edit dl rm
resolvectl	162480	0755	edit dl rm
rev	14720	0755	edit dl rm
rgrep	30	0755	edit dl rm
rm	59912	0755	edit dl rm
rmdir	47528	0755	edit dl rm
routel	1658	0755	edit dl rm
rtstat	23200	0755	edit dl rm
run-parts	27464	0755	edit dl rm
runcon	35336	0755	edit dl rm
rview	1736392	0755	edit dl rm
savelog	10487	0755	edit dl rm
sbattach	23080	0755	edit dl rm
sbkeysync	35576	0755	edit dl rm
sbsiglist	14952	0755	edit dl rm
sbsign	35536	0755	edit dl rm
sbvarsign	23280	0755	edit dl rm
sbverify	31344	0755	edit dl rm
scp	137816	0755	edit dl rm
script	55680	0755	edit dl rm
scriptlive	43392	0755	edit dl rm
scriptreplay	35200	0755	edit dl rm
sdiff	51600	0755	edit dl rm
sed	113224	0755	edit dl rm
select-editor	2450	0755	edit dl rm
sensible-browser	1583	0755	edit dl rm
sensible-editor	1556	0755	edit dl rm
sensible-pager	921	0755	edit dl rm
sensible-terminal	1176	0755	edit dl rm
seq	51720	0755	edit dl rm
setarch	27288	0755	edit dl rm
setpriv	39304	0755	edit dl rm
setsid	14720	0755	edit dl rm
setterm	35200	0755	edit dl rm
sftp	154280	0755	edit dl rm
sg	40664	4755	edit dl rm
sh	129784	0755	edit dl rm
sha1sum	39336	0755	edit dl rm
sha224sum	39336	0755	edit dl rm
sha256sum	39336	0755	edit dl rm
sha384sum	39336	0755	edit dl rm
sha512sum	39336	0755	edit dl rm
shred	55816	0755	edit dl rm
shuf	47624	0755	edit dl rm
skill	27048	0755	edit dl rm
slabtop	22976	0755	edit dl rm
sleep	35336	0755	edit dl rm
slogin	846888	0755	edit dl rm
snap	23523401	0755	edit dl rm
snapctl	-	0	edit dl rm
snice	27048	0755	edit dl rm
sort	105272	0755	edit dl rm
splash-client	404	0755	edit dl rm
split	56256	0755	edit dl rm
sqfscat	151448	0755	edit dl rm
sqfstar	293832	0755	edit dl rm
ss	132168	0755	edit dl rm
ssh	846888	0755	edit dl rm
ssh-add	301488	0755	edit dl rm
ssh-agent	309688	2755	edit dl rm
ssh-argv0	1455	0755	edit dl rm
ssh-copy-id	13078	0755	edit dl rm
ssh-keygen	453056	0755	edit dl rm
ssh-keyscan	338368	0755	edit dl rm
stat	88592	0755	edit dl rm
stdbuf	51720	0755	edit dl rm
stty	80408	0755	edit dl rm
su	55680	4755	edit dl rm
sudo	277936	4755	edit dl rm
sudoedit	277936	4755	edit dl rm
sudoreplay	98256	0755	edit dl rm
sum	35240	0755	edit dl rm
sync	35240	0755	edit dl rm
systemctl	1501304	0755	edit dl rm
systemd	100816	0755	edit dl rm
systemd-ac-power	14792	0755	edit dl rm
systemd-analyze	203624	0755	edit dl rm
systemd-ask-password	19024	0755	edit dl rm
systemd-cat	18896	0755	edit dl rm
systemd-cgls	23112	0755	edit dl rm
systemd-cgtop	39392	0755	edit dl rm
systemd-confext	55952	0755	edit dl rm
systemd-creds	43744	0755	edit dl rm
systemd-cryptenroll	72624	0755	edit dl rm
systemd-cryptsetup	80840	0755	edit dl rm
systemd-delta	27080	0755	edit dl rm
systemd-detect-virt	18888	0755	edit dl rm
systemd-escape	22984	0755	edit dl rm
systemd-firstboot	60232	0755	edit dl rm
systemd-hwdb	158456	0755	edit dl rm
systemd-id128	22984	0755	edit dl rm
systemd-inhibit	23008	0755	edit dl rm
systemd-machine-id-setup	19072	0755	edit dl rm
systemd-mount	52000	0755	edit dl rm
systemd-notify	27304	0755	edit dl rm
systemd-path	18888	0755	edit dl rm
systemd-repart	199912	0755	edit dl rm
systemd-run	68392	0755	edit dl rm
systemd-socket-activate	31176	0755	edit dl rm
systemd-stdio-bridge	22992	0755	edit dl rm
systemd-sysext	55952	0755	edit dl rm
systemd-sysusers	68224	0755	edit dl rm
systemd-tmpfiles	117448	0755	edit dl rm
systemd-tty-ask-password-agent	35272	0755	edit dl rm
systemd-umount	52000	0755	edit dl rm
tabs	18744	0755	edit dl rm
tac	39336	0755	edit dl rm
tail	64032	0755	edit dl rm
tar	432048	0755	edit dl rm
taskset	31104	0755	edit dl rm
tee	39432	0755	edit dl rm
tempfile	14648	0755	edit dl rm
test	47552	0755	edit dl rm
tic	92584	0755	edit dl rm
timedatectl	815	0755	edit dl rm
timedatectl.real	47560	0755	edit dl rm
timeout	39880	0755	edit dl rm
tload	22928	0755	edit dl rm
toe	22840	0755	edit dl rm
top	134864	0755	edit dl rm
touch	96776	0755	edit dl rm
tput	26968	0755	edit dl rm
tr	47624	0755	edit dl rm
true	26936	0755	edit dl rm
truncate	39432	0755	edit dl rm
tset	26944	0755	edit dl rm
tsort	47624	0755	edit dl rm
tty	35336	0755	edit dl rm
tzselect	15378	0755	edit dl rm
ucf	41657	0755	edit dl rm
ucfr	11111	0755	edit dl rm
uclampset	31104	0755	edit dl rm
udevadm	1443632	0755	edit dl rm
umount	39296	4755	edit dl rm
uname	35336	0755	edit dl rm
uncompress	2346	0755	edit dl rm
unexpand	39456	0755	edit dl rm
uniq	39432	0755	edit dl rm
unlink	35336	0755	edit dl rm
unshare	43624	0755	edit dl rm
unsquashfs	151448	0755	edit dl rm
update-alternatives	59784	0755	edit dl rm
uptime	14720	0755	edit dl rm
users	35336	0755	edit dl rm
utmpdump	22912	0755	edit dl rm
varlinkctl	31176	0755	edit dl rm
vcs-run	6912	0755	edit dl rm
vdir	142312	0755	edit dl rm
vi	1736392	0755	edit dl rm
view	1736392	0755	edit dl rm
vim.tiny	1736392	0755	edit dl rm
vmstat	39712	0755	edit dl rm
w	27008	0755	edit dl rm
wall	22912	0755	edit dl rm
watch	31584	0755	edit dl rm
wc	55824	0755	edit dl rm
wdctl	35224	0755	edit dl rm
whereis	31576	0755	edit dl rm
which	1080	0755	edit dl rm
which.debianutils	1080	0755	edit dl rm
who	59928	0755	edit dl rm
whoami	35336	0755	edit dl rm
wpa_passphrase	14728	0755	edit dl rm
x86_64	27288	0755	edit dl rm
xargs	63912	0755	edit dl rm
xdg-email	38	0755	edit dl rm
xdg-open	38	0755	edit dl rm
xdg-settings	1723	0755	edit dl rm
yes	35208	0755	edit dl rm
ypdomainname	22760	0755	edit dl rm
zcat	1984	0755	edit dl rm
zcmp	1678	0755	edit dl rm
zdiff	6460	0755	edit dl rm
zdump	31008	0755	edit dl rm
zegrep	29	0755	edit dl rm
zfgrep	29	0755	edit dl rm
zforce	2081	0755	edit dl rm
zgrep	8103	0755	edit dl rm
zless	2206	0755	edit dl rm
zmore	1842	0755	edit dl rm
znew	4577	0755	edit dl rm
[	55744	0755	edit dl rm

Edit: /snap/core24/1643/usr/bin/ucf (41657B)

#!/bin/sh
#                               -*- Mode: Sh -*-
# updateConfFile.sh ---
# Author           : Manoj Srivastava ( srivasta@glaurung.green-gryphon.com )
# Created On       : Fri Feb  1 03:41:47 2002
# Created On Node  : glaurung.green-gryphon.com
# Last Modified By : Manoj Srivastava
# Last Modified On : Tue Jun  6 09:48:22 2006
# Last Machine Used: glaurung.internal.golden-gryphon.com
# Update Count     : 186
# Status           : Unknown, Use with caution!
# HISTORY          :
# Description      :
#
# This script attempts to provide conffile like handling for files not
# shipped in a Debian package, but handled by the postinst. Using this
# script, one may ship a bunch of default cofiguration files somewhere
# in /usr (/usr/share/<pkg> is a good location), and maintain files in
# /etc.
#
# The motivation for this script was to provide conffile like handling
# for start files for emacs lisp packages (for example,
# /etc/emacs21/site-stard.d/50psgml-init.el) These start files are not
# shipped with the package, instead, they are installed during the
# post installation configuration phase by the script
# /usr/lib/emacsen-common/emacs-package-install $package_name.
#
# This script is meant to be invoked by the packages install script at
# /usr/lib/emacsen-common/packages/install/$package_name for each
# flavour of installed emacsen by calling it with the proper values of
# new file (/usr/share/emacs/site-lisp/<pkg>/<pkg>-init.el), and dest file
# (/etc/emacs21/site-stard.d/50<pkg>-init.el)), and it should do the rest.
#

# make sure we exit on error
set -e

# set the version and revision
progname="$(basename $0)"
pversion='Revision: 3.00 '

unset GREP_OPTIONS

######################################################################
########                                                     #########
########              Utility functions                      #########
########                                                     #########
######################################################################
setq() {
    # Variable Value Doc_string
    if [ "x$2" = "x" ]; then
	echo >&2 "$progname: Unable to determine $3"
	exit 1;
    else
	if [ "x$VERBOSE" != "x" ]; then
	    echo >&2 "$progname: $3 is $2";
	fi
	eval "$1=\"\$2\"";
    fi
}

# Usage: get_file_metadate file_name
get_file_metadata()
{
    if [ -e "$1" ]; then
        # get file modification date without the nanoseconds and timezone info
        local moddate="$(date +"%F %T" --date $(stat --format '@%Y' "$1"))"
        # print file_name user.group permissions above_date
        stat --format "%n %U.%G 0%a $moddate" "$1"
    else
        echo "/dev/null"
    fi
}

# Runs the diff command with approrpiate arguments
# Usage run_diff diff|sdiff diff_opts old_file new_file
run_diff()
{
    local diff_cmd="$1"
    local diff_opt="$2"
    local old_file="$3"
    local new_file="$4"

# Note: get_file_metadata not in quotes to ignore "\n" characters
    local old_file_label="$(get_file_metadata "$old_file")"
    local new_file_label="$(get_file_metadata "$new_file")"

[ -e "$old_file" ] || old_file=/dev/null
    [ -e "$new_file" ] || new_file=/dev/null

if [ "$diff_cmd" = "diff" ] ; then
      diff "$diff_opt" --label "$old_file_label" "$old_file" \
            --label "$new_file_label" "$new_file" || true
    elif [ "$diff_cmd" = "sdiff" ] ; then
      # unfortunatelly the sdiff command does not support --label option
      local out="$(sdiff "$diff_opt" "$old_file" "$new_file")" || true
      [ -z "$out" ] || printf "Old file: %s\nNew file: %s\n\n%s" \
                               "$old_file_label" "$new_file_label" "$out"
    else
      echo "Unknown diff command: $diff_cmd" >&2
      exit 1
    fi
}

# Use debconf to show the differences
# Usage: show_diff actual_file_differences file_stat_differences
show_diff() {
    if [ -z "$1" ]; then
	DIFF="There are no non-white space differences in the files."
    else
        if  [ 99999 -lt "$(echo $1 | wc -c | awk '{print $1; }')" ]; then
            DIFF="The differences between the files are too large to display."
        else
            DIFF="$1"
        fi
    fi
    if [ "$DEBCONF_OK" = "YES" ] && [ "$DEBIAN_HAS_FRONTEND" ]; then
	templ=ucf/show_diff
	db_capb escape
	db_subst $templ DIFF "$(printf %s "$DIFF" | debconf-escape -e)"
	db_fset $templ seen false
	db_input critical $templ || true
	db_go || true
	db_get $templ
	# may contain sensitive information, so clear
	# immediatly after use so it is never written
	# to disk
	db_subst $templ DIFF ""
	db_reset $templ
	db_capb
    else
        if [ -z "$my_pager" ]; then
	    echo "$DIFF" | sensible-pager
        else
	    echo "$DIFF" | $my_pager
        fi
    fi
}

withecho () {
        echo "$@" >&2
        "$@"
}

usageversion () {
        cat >&2 <<END
Debian GNU/Linux $progname $pversion.
           Copyright (C) 2002-2005 Manoj Srivastava.
This is free software; see the GNU General Public Licence for copying
conditions.  There is NO warranty.

Usage: $progname  [options] new_file  destination
Options:
     -h,     --help          print this message
     -s foo, --src-dir  foo  Set the src dir (historical md5sums live here)
             --sum-file bar  Force the historical md5sums to be read from
                             this file.  Overrides any setting of --src-dir.
     -d[n], --debug=[n]      Set the Debug level to N. Please note there must
                             be no spaces before the debug level
     -n,     --no-action     Dry run. No action is actually taken.
     -P foo, --package foo   Don't follow dpkg-divert diversions by package foo.
     -v,     --verbose       Make the script verbose
             --three-way     Register this file in the cache, and turn on the
                             diff3 option allowing the merging of maintainer
                             changes into a (potentially modified) local
                             configuration file. )
             --state-dir bar Set the state directory to bar instead of the
                             default '/var/lib/ucf'. Used mostly for testing.
             --debconf-ok    Indicate that it is ok for ucf to use an already
                             running debconf instance for prompting.
             --debconf-template bar
                             Specify an alternate, caller-provided debconf
                             template to use for prompting.
Usage: $progname  -p  destination
     -p,     --purge         Remove any reference to destination from records

By default, the directory the new_file lives in is assumed to be the src-dir,
which is where we look for any historical md5sums.

END

}

######################################################################
########                                                     #########
########        file and hash save/restore functions         #########
########                                                     #########
######################################################################
purge_md5sum () {
    for i in $(/usr/bin/seq 6 -1 0); do
	if [ -e "${statedir}/hashfile.${i}" ]; then
	    if [ "X$docmd" = "XYES" ]; then
		cp -pf "${statedir}/hashfile.${i}" \
		    "${statedir}/hashfile.$(($i+1))"
	    else
		echo cp -pf "${statedir}/hashfile.${i}" \
                          "${statedir}/hashfile.$(($i+1))"
	    fi
	fi
    done
    if [ -e "$statedir/hashfile" ]; then
	if [ "X$docmd" = "XYES" ]; then
	    cp -pf "$statedir/hashfile"  "$statedir/hashfile.0"
	else
	    echo cp -pf "$statedir/hashfile"  "$statedir/hashfile.0"
	fi
	if [ "X$docmd" = "XYES" ]; then
	    set +e
	    if [ "X$VERBOSE" != "X" ]; then
		echo >&2 "grep -Ev [[:space:]]${safe_dest_file}$ $statedir/hashfile"
		grep -Ev "[[:space:]]${safe_dest_file}$"  "$statedir/hashfile" >&2 \
		    || true;
	    fi
	    #echo "grep -Ev [[:space:]]${safe_dest_file}$ $statedir/hashfile"
	    grep -Ev "[[:space:]]${safe_dest_file}$" "$statedir/hashfile" > \
		"$statedir/hashfile.tmp" || true;
	    if [ "X$docmd" = "XYES" ]; then
		mv -f "$statedir/hashfile.tmp"  "$statedir/hashfile"
	    else
		echo mv -f "$statedir/hashfile.tmp"  "$statedir/hashfile"
	    fi
	    set -e
	fi
    fi
    test -n "$VERBOSE" && echo >&2 "The cache file is $cached_file"
    if [ ! -z "$cached_file" -a -f "$statedir/cache/$cached_file" ]; then
	$action rm -f "$statedir/cache/$cached_file"
    fi
}

replace_md5sum () {
    for i in $(/usr/bin/seq 6 -1 0); do
	if [ -e "${statedir}/hashfile.${i}" ]; then
	    if [ "X$docmd" = "XYES" ]; then
		cp -pf "${statedir}/hashfile.${i}" \
		    "${statedir}/hashfile.$(($i+1))"
	    else
		echo cp -pf "${statedir}/hashfile.${i}" \
		    "${statedir}/hashfile.$(($i+1))"
	    fi
	fi
    done
    if [ -e "$statedir/hashfile" ]; then
	if [ "X$docmd" = "XYES" ]; then
	    cp -pf "$statedir/hashfile"  "$statedir/hashfile.0"
	else
	    echo cp -pf "$statedir/hashfile"  "$statedir/hashfile.0"
	fi
	if [ "X$docmd" = "XYES" ]; then
	    set +e
	    if [ "X$VERBOSE" != "X" ]; then
		echo >&2 "(grep -Ev \"[[:space:]]${safe_dest_file}$\" \"$statedir/hashfile\";"
		grep -Ev "[[:space:]]${safe_dest_file}$"  "$statedir/hashfile" >&2 || true;
		md5sum "$orig_new_file" | sed "s|$orig_new_file|$dest_file|" >&2;
	    fi
	    grep -Ev "[[:space:]]${safe_dest_file}$" "$statedir/hashfile" > \
		"$statedir/hashfile.tmp" || true;
	    md5sum "$orig_new_file" | sed "s|$orig_new_file|$dest_file|" >> \
		"$statedir/hashfile.tmp";
	    mv -f "$statedir/hashfile.tmp"  "$statedir/hashfile"
	    set -e
	else
	    echo "(grep -Ev \"[[:space:]]${safe_dest_file}$\" \"$statedir/hashfile\""
	    echo " md5sum \"$orig_new_file\" | sed \"s|$orig_new_file|$dest_file|\"; "
	    echo ") | sort > \"$statedir/hashfile\""
	fi
    else
	if [ "X$docmd" = "XYES" ]; then
	    md5sum "$orig_new_file" | sed "s|$orig_new_file|$dest_file|"  > \
		"$statedir/hashfile"
	else
	    echo " md5sum \"$orig_new_file\" | sed \"s|$orig_new_file|$dest_file|\" >" \
		"\"$statedir/hashfile\""
	fi
    fi
    file_size=$(stat -c '%s' "$orig_new_file")
    if [ "X$THREEWAY" != "X" ] || [ "$file_size" -lt 25600 ]; then
	$action cp -pf "$orig_new_file" "$statedir/cache/$cached_file"
    fi
    # cp -pf "$orig_new_file" "$dest_file.${DIST_SUFFIX}"
}

replace_conf_file () {
    # do not mangle $dest_file since it's the one registered in the hashfile
    # or we have been ask to register
    real_file="$dest_file"
    if [ -L "$dest_file" ]; then
	real_file="$(readlink -nf $dest_file || :)"
	if [ "x$real_file" = "x" ]; then
	    echo >&2 "$dest_file is a broken symlink!"
	    $action rm -f "$dest_file";
	    real_file="$dest_file"
	fi
    fi
    if [ -e "$real_file" ]; then
	if [ -z "$RETAIN_OLD" ]; then
	    #echo "Saving  ${real_file}.${OLD_SUFFIX},  in case."
	    if [ "x$VERBOSE" != "x" ]; then
		echo >&2 "Not saving ${real_file}, since it was unmodified"
	    fi
	else
	    $action cp -pf $selinux "${real_file}" "${real_file}.${OLD_SUFFIX}"
	fi
    fi
    if [ -e "${real_file}" ]; then
        # Do not change the permissions and attributes of the destination
        $action cp -f $selinux "$new_file" "${real_file}"
    else
        # No destination file exists
        $action cp -pf $selinux "$new_file" "${real_file}"
    fi
    replace_md5sum;
}

# Escape single quotes in the arguments passed in
quote_single() {
    printf "%s\n" "$1" | sed -e "s,','\\\\'',g"
}

######################################################################
########                                                     #########
########              Command line args                      #########
########                                                     #########
######################################################################
#
# Long term variables#
#
docmd='YES'
action='withecho'
action=
selinux=''
DEBUG=0
VERBOSE=''
statedir='/var/lib/ucf';
THREEWAY=

DIST_SUFFIX="ucf-dist"
NEW_SUFFIX="ucf-new"
OLD_SUFFIX="ucf-old"
ERR_SUFFIX="merge-error"
# save up the cmdline with proper quoting/escaping
for arg in "$@"; do
    saved="${saved:+$saved }'$(quote_single "$arg")'"
done

# Note that we use `"$@"' to let each command-line parameter expand to a
# separate word. The quotes around `$@' are essential!
# We need TEMP as the `eval set --' would nuke the return value of getopt.
TEMP=$(getopt -a -o hs:d::D::npP:Zv -n "$progname" \
      --long help,src-dir:,sum-file:,dest-dir:,debug::,DEBUG::,no-action,package:,purge,verbose,three-way,debconf-ok,debconf-template:,state-dir: \
             -- "$@")

# Note the quotes around `$TEMP': they are essential!
eval set -- "$TEMP"

while true ; do
    case "$1" in
	-h|--help) usageversion;                        exit 0 ;;
	-n|--no-action) action='echo'; docmd='NO';      shift  ;;
	-v|--verbose) VERBOSE=1;                        shift  ;;
	-P|--package)
	    opt_package="$2";			       shift 2 ;;
	-s|--src-dir)
	    opt_source_dir="$2";                       shift 2 ;;
	--sum-file)
	    opt_old_mdsum_file="$2";		  shift 2 ;;
	--state-dir)
	    opt_state_dir="$2";                        shift 2 ;;
	--debconf-template)
	    override_template="$2";                    shift 2 ;;
	-D|-d|--debug|--DEBUG)
            # d has an optional argument. As we are in quoted mode,
            # an empty parameter will be generated if its optional
            # argument is not found.
	    case "$2" in
		"") setq DEBUG 1    "The Debug value"; shift 2 ;;
		*)  setq DEBUG "$2" "The Debug value"; shift 2 ;;
	    esac ;;
        -p|--purge) PURGE=YES;                         shift   ;;
       --three-way) THREEWAY=YES;                       shift   ;;
       --debconf-ok) DEBCONF_OK=YES;                    shift   ;;
       -Z) selinux='-Z';                                shift   ;;
	--)  shift ;                                   break   ;;
	*) echo >&2 "Internal error!" ; exit 1 ;;
    esac
done

######################################################################
########                                                     #########
########              Sanity checking                        #########
########                                                     #########
######################################################################
# Need to run as root, or else the
if test "$(id -u)" != 0; then
    if [ "$docmd" = "YES" ]; then
        echo "$progname: Need to be run as root." >&2
        echo "$progname: Setting up no action mode." >&2
        action='echo'; docmd='NO';
    fi
fi

if [ "X$PURGE" = "XYES" ]; then
    if [ $# != 1 ]; then
	echo >&2 "*** ERROR: Need exactly one argument when purging, got $#";
	echo >&2 ""
	usageversion;
	exit 2 ;
    fi
    temp_dest_file="$1";
    if [ -e "$temp_dest_file" ]; then
        setq dest_file "$(readlink -q -m $temp_dest_file)" "The Destination file";
    else
        setq dest_file "$temp_dest_file" "The Destination file";
    fi
else
    if [ $# != 2 ]; then
	echo >&2 "*** ERROR: Need exactly two arguments, got $#";
	echo >&2 ""
	usageversion;
	exit 2 ;
    fi
    temp_new_file="$1";
    temp_dest_file="$2";

if [ ! -e "${temp_new_file}" ]; then
	echo >&2 "Error: The new file ${temp_new_file} does not exist!";
	exit 1;
    fi
    setq new_file  "$(readlink -q -m $temp_new_file)"  "The new file";
    if [ -e "$temp_dest_file" ]; then
        setq dest_file "$(readlink -q -m $temp_dest_file)" "The Destination file";
    else
        setq dest_file "$temp_dest_file" "The Destination file";
    fi
fi

# Follow dpkg-divert as though we are installed as part of $opt_package
divert_line=$(dpkg-divert --listpackage "$dest_file")
if [ -n "$divert_line" ]; then
   # name of the package or 'LOCAL' for a local diversion
   divert_package="$divert_line"

if [ "$divert_package" != "$opt_package" ]; then
       dest_file=$(dpkg-divert --truename "$dest_file")
   fi
fi
safe_dest_file=$(echo "$dest_file" | perl -nle 'print "\Q$_\E\n"')

######################################################################
########                                                     #########
########              Set Default Values                     #########
########                                                     #########
######################################################################
# Load site defaults and over rides.
if [ -f /etc/ucf.conf ]; then
    . /etc/ucf.conf
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_source_dir" = "x" ]; then
    setq source_dir "$opt_source_dir" "The Source directory"
elif [ ! "x$UCF_SOURCE_DIR" = "x" ]; then
    setq source_dir "$UCF_SOURCE_DIR" "The Source directory"
elif [ ! "x$conf_source_dir" = "x" ]; then
    setq source_dir "$conf_source_dir" "The Source directory"
else
    if [ "X$new_file" != "X" ]; then
	setq source_dir "$(dirname $new_file)" "The Source directory"
    else
	setq source_dir "/tmp" "The Source directory"
    fi

if [ "X$PAGER" != "X" ] && which "$PAGER" >/dev/null 2>&1 ; then
    my_pager="$(which $PAGER)";
elif [ -s /usr/bin/pager ] &&
     [ "X$(readlink -e /usr/bin/pager || :)" != "X" ]; then
    my_pager=/usr/bin/pager
elif [ -x /usr/bin/sensible-pager ]; then
    my_pager=/usr/bin/sensible-pager
elif [ -x /bin/more ]; then
    my_pager=/bin/more
else
    my_pager=
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_state_dir" = "x" ]; then
    setq statedir "$opt_state_dir" "The State directory"
elif [ ! "x$UCF_STATE_DIR" = "x" ]; then
    setq statedir "$UCF_STATE_DIR" "The State directory"
elif [ ! "x$conf_state_dir" = "x" ]; then
    setq statedir "$conf_state_dir" "The State directory"
else
    setq statedir '/var/lib/ucf'  "The State directory"
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_force_conffold" = "x" ]; then
    setq force_conffold "$opt_force_conffold" "Keep the old file"
elif [ ! "x$UCF_FORCE_CONFFOLD" = "x" ]; then
    setq force_conffold "$UCF_FORCE_CONFFOLD" "Keep the old file"
elif [ ! "x$conf_force_conffold" = "x" ]; then
    setq force_conffold "$conf_force_conffold" "Keep the old file"
else
    force_conffold=''
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_force_conffnew" = "x" ]; then
    setq force_conffnew "$opt_force_conffnew" "Replace the old file"
elif [ ! "x$UCF_FORCE_CONFFNEW" = "x" ]; then
    setq force_conffnew "$UCF_FORCE_CONFFNEW" "Replace the old file"
elif [ ! "x$conf_force_conffnew" = "x" ]; then
    setq force_conffnew "$conf_force_conffnew" "Replace the old file"
else
    force_conffnew=''
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_force_conffmiss" = "x" ]; then
    setq force_conffmiss "$opt_force_conffmiss" "Replace any missing files"
elif [ ! "x$UCF_FORCE_CONFFMISS" = "x" ]; then
    setq force_conffmiss "$UCF_FORCE_CONFFMISS" "Replace any missing files"
elif [ ! "x$conf_force_conffmiss" = "x" ]; then
    setq force_conffmiss "$conf_force_conffmiss" "Replace any missing files"
else
    force_conffmiss=''
fi

if [ -n "$opt_old_mdsum_file" ]; then
    setq old_mdsum_file "$opt_old_mdsum_file" "The md5sum is found here"
elif [ ! "x$UCF_OLD_MDSUM_FILE" = "x" ]; then
    setq old_mdsum_file "$UCF_OLD_MDSUM_FILE" "The md5sum is found here"
elif [ ! "x$conf_old_mdsum_file" = "x" ]; then
    setq old_mdsum_file "$conf_old_mdsum_file" "Replace the old file"
elif [ ! "x${new_file}" = "x" ]; then
    old_mdsum_file="$source_dir/$(basename ${new_file}).md5sum";
else
    old_mdsum_file="";
fi

######################################################################
########                                                     #########
########               More Sanity checking                  #########
########                                                     #########
######################################################################
if [ "X$force_conffold" != "X" -a "X$force_conffnew" != "X" ]; then
    echo >&2 "Error: Only one of force_conffold and force_conffnew should";
    echo >&2 "       be set";
    exit 1;
fi

# VERBOSE of 0 is supposed to be the same as not setting VERBOSE
if [ "X$VERBOSE" = "X0" ]; then
    VERBOSE=''
fi

#
if [ -e "$statedir/hashfile" -a ! -w "$statedir/hashfile" ]; then
    echo >&2 "ucf: do not have write privilege to the state data"
    if [ "X$docmd" = "XYES" ]; then
	exit 1;
    fi
fi

if [ ! -d $statedir/cache ]; then
    $action mkdir -p $statedir/cache ;
fi

# test and see if this file exists in the database
if [ -e "$statedir/hashfile" ]; then
    if [ "X$VERBOSE" != "X" ]; then
	echo >&2 "The hash file exists"
	echo >&2 "grep -E" "[[:space:]]${safe_dest_file}$" "$statedir/hashfile"
	grep -E "[[:space:]]${safe_dest_file}$" "$statedir/hashfile" >&2 || true
    fi
    lastsum=$(grep -E "[[:space:]]${safe_dest_file}$" "$statedir/hashfile" | \
                   awk '{print $1;}' )
fi

if [ ! "x${new_file}" = "x" ]; then
    old_mdsum_dir="$source_dir/"$(basename "${new_file}")".md5sum.d";
else
    old_mdsum_dir="";
fi

cached_file="$(echo $dest_file | tr / :)"
######################################################################
########                                                     #########
########                  Debugging dump                     #########
########                                                     #########
######################################################################

if [ $DEBUG -gt 0 ]; then
    cat >&2 <<EOF
The new start file is      \`$new_file\'
The destination is         \`$dest_file\' (\`$safe_dest_file\')
The history is kept under  \'$source_dir\'
The file may be cached at \'$statedir/cache/$cached_file\'
EOF
    if [ -s "$dest_file" ]; then
	echo "The destination file exists, and has md5sum:"
	md5sum "$dest_file"
    else
	echo "The destination file does not exist."
    fi
    if [ "X$lastsum" != "X" ]; then
	echo "The old md5sum exists, and is:"
	echo "$lastsum"
    else
	echo "The old md5sum does not exist."
        if [ -d "$old_mdsum_dir" -o -f "$old_mdsum_file" ]; then
            echo "However, there are historical md5sums around."
        fi
    fi
    if [ -e "$new_file" ]; then
	echo "The new file exists, and has md5sum:"
	md5sum "$new_file"
    else
	echo "The new file does not exist."
    fi
    if [ -d "$old_mdsum_dir" ]; then
	echo "The historical md5sum dir $old_mdsum_dir exists"
    elif [ -f "$old_mdsum_file" ]; then
	echo "The historical md5sum file $old_mdsum_file exists"
    else
	echo "Historical md5sums are not available"
    fi
fi

######################################################################
########                                                     #########
########        Short circuit if we are purging              #########
########                                                     #########
######################################################################

if [ "X$PURGE" = "XYES" ]; then
    if [ "X$VERBOSE" != "X" ]; then
	echo >&2 "Preparing to purge ${dest_file}"
    fi
    purge_md5sum;
    exit 0;
fi

# now we can restore $@
eval set -- "$saved"

######################################################################
########                                                     #########
########                  DebConf stuff                      #########
########                                                     #########
######################################################################

# Is debconf already running? Kinda tricky, because it will be after the
# confmodule is sourced, so only test before that.
if [ -z "$DEBCONF_ALREADY_RUNNING" ]; then
    if [ "$DEBIAN_HAS_FRONTEND" ]; then
	DEBCONF_ALREADY_RUNNING='YES'
    else
	DEBCONF_ALREADY_RUNNING='NO'
    fi
fi

export DEBCONF_ALREADY_RUNNING

if [ -z "$DEBCONF_OK" ]; then
    if [ "$DEBCONF_ALREADY_RUNNING" = 'YES' ]; then
	DEBCONF_OK='NO'
    else
	DEBCONF_OK='YES'
    fi
fi

# Time to start nagging the users who call ucf without debconf-ok
if [ "$DEBCONF_ALREADY_RUNNING"  = 'YES' ] && [ "$DEBCONF_OK" = NO ]; then
	# Commented out for now, uncomment after a while to begin nagging
	# maintainers to fix their scripts.
	cat \
<<END
*** WARNING: ucf was run from a maintainer script that uses debconf, but
             the script did not pass --debconf-ok to ucf. The maintainer
             script should be fixed to not stop debconf before calling ucf,
             and pass it this parameter. For now, ucf will revert to using
             old-style, non-debconf prompting. Ugh!

Please inform the package maintainer about this problem.
END
fi

# Start up debconf or at least get the db_* commands available
if [ -e /usr/share/debconf/confmodule ]; then
    if test "$(id -u)" = 0; then
	. /usr/share/debconf/confmodule

# Load our templates, just in case our template has
	# not been loaded or the Debconf DB lost or corrupted
	# since then, but only if it is OK to use debconf.
        if [ "$DEBCONF_OK" = 'YES' ]; then
            db_x_loadtemplatefile "$(dpkg-query --control-path ucf templates)" ucf
        fi
    else
        echo >&2 "$progname: Not loading confmodule, since we are not running as root."
    fi
    # Only set the title if debconf was not already running.
    # If it was running, then we do not want to clobber the
    # title used for configuring the whole package with debconf.
    if [ "$DEBCONF_ALREADY_RUNNING" = 'NO' ]; then
	if ! db_settitle ucf/title 2>/dev/null; then
      	    # Older debconf that does not support that command.
            if test "$(id -u)" = 0; then
		db_title "Modified configuration file"
            else
                echo >&2 "$progname: Not changing title, since we are not running as root."
            fi
	fi
    fi
fi

######################################################################
########                                                     #########
########                Start Processing                     #########
########                                                     #########
######################################################################

orig_new_file="$new_file"	# Since sometimes we replace the newfile below
newsum=$(md5sum "$new_file" | awk '{print $1}')

# Determine the action for the current file. The default is to ask,
# with non-replacement being the norm.
# If the config dir exists
#   if file in always overwrite, state +=1;
#   fi
#   if file in never overwrite, state +=2;
#   fi
#   if file in ask; state +=4
#   fi
#   if state == 0; then state = default
#   if state >= 4; ask
#   if state == 3;  ask
#   if state == 2; exit
#   if state == 1; then replace_conffile; exit

######################################################################
########                                                     #########
########               Do the replacement                    #########
########                                                     #########
######################################################################
# Step 1: If we have no record of this file, and dest file
#         does, We need to determine how to initialize the
#         ${old_mdsum_prefix}.old file..
if [ -e "$dest_file" ]; then
    destsum=$(md5sum "$dest_file"  | awk '{print $1}');
    if [ "X$lastsum" = "X" ]; then
#      a: If we have a directory containing historical md5sums of this
#         file in question, we should look and see if the currently
#         installed file matches any of the old md5sums; in which case
#         it can be silently replaced.
	if [ -d "$old_mdsum_dir" -o -f "$old_mdsum_file" ]; then
	    if [ -d "$old_mdsum_dir"  ]; then
		for file in ${old_mdsum_dir}/*; do
		    oldsum="$(awk '{print $1}' $file)";
		    if [ "$oldsum" = "$destsum"  ]; then
			if [ "X$force_conffold" = "X" ]; then
#                           Bingo! replace, set the md5sum, and we are done
			    if [ "X$VERBOSE" != "X" ]; then
				echo >&2 \
				    "Replacing config file $dest_file with new version"
			    fi
			    replace_conf_file;
			    exit 0;
			else
			    replace_md5sum;
			    cp -pf "$orig_new_file" "$dest_file.${DIST_SUFFIX}"
			    exit 0;
			fi
		    fi
		done
	    elif [ -f "$old_mdsum_file" ]; then
		oldsum=$(grep -E "^${destsum}" "$old_mdsum_file" || true)
		if [ "X$oldsum" != "X" ]; then
#                    Bingo
		    if [ "X$force_conffold" = "X" ]; then
			if [ "X$VERBOSE" != "X" ]; then
			    echo >&2 \
				"Replacing config file $dest_file with new version"
			fi
			replace_conf_file;
			exit 0;
		    else
			replace_md5sum;
			cp -pf "$orig_new_file" "$dest_file.${DIST_SUFFIX}"
			exit 0;
		    fi
		fi
	    fi
#	   Well, nothing matched. We now check to see if the
#	   maintainer has an opinion on how to set the ``md5sum of the
#	   previously installed version'', since we have no way of
#	   determining that automatically. Please note that unless
#	   there are limited number of previously released packages
#	   (like just one), the maintainer is also making a guess at
#	   this point by supplying a historical md5sum default file.
	    if [ "X$VERBOSE" != "X" ]; then
		echo >&2 "Historical md5sums did not match."
	    fi
	    if [ -d "$old_mdsum_dir"  ]; then
		if [ -e "${old_mdsum_dir}/default" ]; then
		    if [ "X$VERBOSE" != "X" ]; then
			echo >&2 "However, a default entry exists, using it."
		    fi
		    lastsum="$(awk '{print $1;}' ${old_mdsum_dir}/default)"
		    do_replace_md5sum=1;
		fi
	    elif [ -f "$old_mdsum_file" ]; then
		oldsum=$(grep -E "[[:space:]]default$" "$old_mdsum_file" | \
		    awk '{print $1;}')
		if [ "X$oldsum" != "X" ]; then
#                    Bingo
		    lastsum=$oldsum;
		    do_replace_md5sum=1;
		fi
	    fi
	fi

#       At this point, we are almost certain that either the
#       historical record of md5sums is not complete, or the user has
#       changed the configuration file. Rather than guessing and
#       chosing one of the historical md5sums, we fall through to the
#       solution used if there had been no historical md5sums
#       directory/file.
	if [ "X$lastsum" = "X" ]; then
#      b: We do not have a historical list of md5sums, or none
#         matched, and we still need to initialize the
#         ${old_mdsum_prefix}.old file. We can't determine whther or
#         not they made any changes, so we err on the side of caution
#         and ask'
	    if [ "X$VERBOSE" != "X" ]; then
		echo >&2 "No match found, we shall ask."
	    fi
	    lastsum='AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA';
	fi # the old md5sum file does not exist, and the historical
	   # record failed
    fi # the old md5sum file does not exist (bug))
else  # "$dest_file" does not exist
# Step 2: If destfile does not exist, create it, set the file
#         "${old_mdsum_prefix}.old" to the md5sum of the new file, and we
#         are done
    if [ "X$lastsum" = "X" ]; then
        # Ok, so there is no indication that the package was ever
        # installed on this machine.
	echo >&2 ""
	echo >&2 "Creating config file $dest_file with new version"
	replace_conf_file;
	exit 0;
    elif [ "$lastsum" = "$newsum" ]; then
        # OK, new version of the file is the same as the last version
        # we saw. Since the user apparently has deleted the file,
        # nothing needs be done, unless we have been told differently
        if [ "X$force_conffmiss" != "X" ]; then
            echo >&2 ""
	    echo >&2 "Recreating deleted config file $dest_file with new version, as asked"
	    replace_conf_file;
	    exit 0;
        else
            echo >&2 "Not replacing deleted config file $dest_file";
        fi

else
        # OK. New upstream version.
        if [ "X$force_conffmiss" != "X" ]; then
            # User has said to replace missing files, so we do so, no
            # questions asked.
            echo >&2 ""
	    echo >&2 "Recreating deleted config file $dest_file with new version, as asked"
	    replace_conf_file;
	    exit 0;
        else
            # Even though the user has deleted this file, they should
            # be asked now, unless specified otherwise.
            if [ "X$force_conffold" = "X" ]; then
                destsum='AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA';
            else
                exit 0;
	    fi
        fi
    fi
fi

# Here, the destfile exists.

# step 3: If the old md5sum and the md5sum of the new file
#         do not match, we need to take action.
if [ "$lastsum" = "$newsum" ]; then
    if [ "X$VERBOSE" != "X" ]; then
	echo >&2 "md5sums match, nothing needs be done."
    fi
    if [ "X$do_replace_md5sum" != "X" ]; then
	replace_md5sum;
    fi
    exit 0;			# Hah. Match. We are done.
fi
#      a: If the md5sum of the dest file is the same as lastsum, replace the
#         destfile, saying we are replacing old config files
if [ "$destsum" = "$lastsum" ]; then
    if [ "X$force_conffold" = "X" ]; then
	echo >&2 "Replacing config file $dest_file with new version"
	replace_conf_file;
	exit 0;
    else
	replace_md5sum;
	cp -pf "$orig_new_file" "$dest_file.${DIST_SUFFIX}"
	exit 0;
    fi
else
#      b: If the md5sum of the dest file differs from lastsum, we need to ask
#         the user what action to take.
    if [ "X$force_conffnew" != "X" ]; then
	echo >&2 "Replacing config file $dest_file with new version"
	echo >&2 "since you asked for it."
        if [ "$destsum" = "$newsum" ]; then
            echo >&2 "The new and the old files are identical, AFAICS"
        else
            echo >&2 "The new and the old files are different"
        fi
	replace_conf_file;
	exit 0;
    fi
    if [ "X$force_conffold" != "X" ]; then
	replace_md5sum;
	cp -pf "$orig_new_file" "$dest_file.${DIST_SUFFIX}"
	exit 0;
    fi
#      c: If the destination file is the same as the new maintianer provided one,
#         we need do nothing.
    if [ "$newsum" = "$destsum" ]; then
	if [ "X$VERBOSE" != "X" ]; then
	    echo >&2 "md5sums of the file in place matches, nothing needs be done."
	fi
	replace_md5sum;
	exit 0;			# Hah. Match. We are done.
    fi

done='NO';
    while [ "X$done" = "XNO" ]; do
	if [ "$DEBCONF_OK" = "YES" ] && [ "$DEBIAN_HAS_FRONTEND" ]; then
		# Use debconf to prompt.
		if [ -e "$statedir/cache/$cached_file" ] && [ "X$THREEWAY" != "X" ]; then
			templ=ucf/changeprompt_threeway
		else
			templ=ucf/changeprompt
		fi
		if [ "X$override_template" != "X" ]; then
			choices="$(db_metaget $templ Choices-C)"
			choices2="$(db_metaget $override_template Choices-C)"
			if [ "$choices" = "$choices2" ]; then
				templ=$override_template
			fi
		fi
		db_fset "$templ" seen false
		db_reset "$templ"
		db_subst "$templ" FILE "$dest_file"
		db_subst "$templ" NEW  "$new_file"
		db_subst "$templ" BASENAME "$(basename $dest_file)"
		db_input critical "$templ" || true
		if ! db_go; then
			# The current ucf interface does not provide a way for it
			# to tell its caller that the user chose to back up.
			# However, we could get here, if the caller turned on
			# debconf's backup capb. The best thing to do seems to be
			# to ignore requests to back up.
			continue
		fi
		db_get "$templ"
		ANSWER="$RET"
	else
            echo >&2 "Need debconf to interact"
            exit 2
########################################################################################
# 		# Prompt without using debconf.                                        #
# 		cat >&2 <<EOPRMT                                                       #
# Configuration file \`$dest_file'                                                     #
#  ==> File on system created by you or by a script.                                   #
#  ==> File also in package provided by package maintainer.                            #
#    What would you like to do about it ?  Your options are:                           #
#     Y or I  : install the package maintainer's version                               #
#     N or O  : keep your currently-installed version                                  #
#       D     : show the differences between the versions                              #
#       S     : show the side-by-side differences between the versions                 #
# EOPRMT                                                                               #
# 		if [ "X$THREEWAY" != "X" -a -e "$statedir/cache/$cached_file" ]; then  #
# 			cat >&2 <<EOTD                                                 #
#     3 or T  : show a three way difference between current, older,                    #
#               and new versions of the file                                           #
#       M     : Do a 3 way merge between current, older,                               #
#               and new versions of the file [Very Experimental]                       #
# EOTD                                                                                 #
# 		fi                                                                     #
# 		cat >&2 <<EOPEND                                                       #
#       Z     : start a new shell to examine the situation                             #
#  The default action is to keep your current version.                                 #
# EOPEND                                                                               #
# 		if [ "X$THREEWAY" != "X" -a -e "$statedir/cache/$cached_file" ]; then  #
# 			echo -n >&2 "*** " $(basename "$dest_file") \                  #
# 			    " (Y/I/N/O/D/3/T/M/Z) [default=N] ?"                       #
# 		else                                                                   #
# 			echo -n >&2 "*** " $(basename "$dest_file") \                  #
# 			    " (Y/I/N/O/D/Z) [default=N] ?"                             #
# 		fi                                                                     #
#   		read -e ANSWER </dev/tty                                               #
########################################################################################
	fi

case "$ANSWER" in
	    install_new|y|Y|I|i)
		echo >&2 "Replacing config file $dest_file with new version"
		RETAIN_OLD=YES
		replace_conf_file;
		exit 0;
		;;
	    diff|D|d)
		DIFF="$(run_diff diff -uBbwt "$dest_file" "$new_file")"
		show_diff "$DIFF"
		;;
	    sdiff|S|s)
		DIFF="$(run_diff sdiff -BbW "$dest_file" "$new_file")"
		show_diff "$DIFF"
		;;
	    diff_threeway|3|t|T)
		if [ -e "$statedir/cache/$cached_file" \
		    -a "X$THREEWAY" != "X" ]; then
                    if [ -e "$dest_file" ]; then
		        DIFF="$(diff3 -L Current -L Older -L New -A \
			    "$dest_file" "$statedir/cache/$cached_file" \
			    "$new_file")"  || true
                    else
                        DIFF="$(diff3 -L Current -L Older -L New -A \
			    /dev/null "$statedir/cache/$cached_file" \
			    "$new_file")"  || true
                    fi
		    show_diff "$DIFF"
		else
		    DIFF="$(run_diff diff -uBbwt "$dest_file" "$new_file")"
		    show_diff "$DIFF"
		fi
		;;
	    merge_threeway|M|m)
		echo >&2 "Merging changes into the new version"
		if [ -e "$statedir/cache/$cached_file" \
		    -a "X$THREEWAY" != "X" ]; then
		    ret=0
		    diff3 -L Current -L Older -L New -m \
			"$dest_file" "$statedir/cache/$cached_file" \
			"$new_file" > "$dest_file.${NEW_SUFFIX}" || ret=$?
                    case "$ret" in
                        0)
		            new_file="$dest_file.${NEW_SUFFIX}"
		            RETAIN_OLD=YES
		            replace_conf_file
			    rm -f "$dest_file.${NEW_SUFFIX}" # don't need this around no mo'
			    exit 0
                            ;;
                        *)
			    mv "$dest_file.${NEW_SUFFIX}" "$dest_file.${ERR_SUFFIX}"
			    db_subst ucf/conflicts_found dest_file "$dest_file"
			    db_subst ucf/conflicts_found ERR_SUFFIX "${ERR_SUFFIX}"
			    db_input critical ucf/conflicts_found || true
			    db_go || true
			    ;;
                    esac
		else
		    replace_conf_file
		    rm -f "$dest_file.${NEW_SUFFIX}" # don't need this around no mo'
		    exit 0
		fi
		;;
	    shell|Z|z)
                # We explicitly connect STDIN and STDOUT to the
                # script's controlling terminal, so even if STDIN is
                # fed by a pipe, as is the case when run from
                # /usr/bin/debconf, the shell should be fully
                # functional. However, the test for a controlling
                # terminal uses /usr/bin/tty, which consults only
                # STDIN. As far as I can tell, when run from debconf,
                # ucf will _never_ use the current terminal. If the
                # goal is to check for access to a terminal, the test
                # should be for foreground process group membership,
                # not a terminal connected to STDIN (tty -s), and not
                # a terminal it doesn't necessarily own (tty -s
                # </dev/tty). The easiest way do this from a shell is
                # probably with /bin/ps.
                if ps -o stat= --ppid $$ | grep -q '+'; then
                    export UCF_CONFFILE_OLD="$dest_file"
                    export UCF_CONFFILE_NEW="$new_file"
		    bash >/dev/tty </dev/tty || true
                elif [ -n "$DISPLAY" ]; then
                    x-terminal-emulator || true
                else
                    # Don't know what to do
                    echo >&2 "No terminal, and no DISPLAY set, can't fork shell."
                    sleep 3;
                fi
		;;
	    keep_current|n|N|o|O|'')
		replace_md5sum;

cp -pf "$orig_new_file" "$dest_file.${DIST_SUFFIX}"
		exit 0;
		;;
	    *)
		if [ "$DEBCONF_OK" = "YES" ]; then
			echo "Error: unknown response from debconf:'$RET'" >&2
			exit 1
		else
			echo
			echo "Please answer with one of the single letters listed." >&2
			echo
		fi
	esac
    done
fi

db_stop

exit 0;

cmd: