FM / examples

/usr/share/doc/lsof/examples

Name	Size	Mode	Actions
00MANIFEST	1807	0644	edit dl rm
00README	2045	0644	edit dl rm
big_brother.perl5.gz	2078	0644	edit dl rm
count_pf.perl	1849	0755	edit dl rm
count_pf.perl5	2022	0755	edit dl rm
identd.perl5	3304	0755	edit dl rm
idrlogin.perl.gz	2222	0644	edit dl rm
idrlogin.perl5.gz	2270	0644	edit dl rm
list_fields.awk.gz	1764	0644	edit dl rm
list_fields.perl.gz	1751	0644	edit dl rm
list_NULf.perl5.gz	1836	0644	edit dl rm
shared.perl5.gz	3571	0644	edit dl rm
sort_res.perl5	3719	0755	edit dl rm
watch_a_file.perl	2235	0755	edit dl rm
xusers.awk	3975	0755	edit dl rm

Edit: /usr/share/doc/lsof/examples/count_pf.perl5 (2022B)

#!/usr/bin/perl
#
# count_pf.perl5 -- run lsof in repeat mode and count processes and
#		    files

sub interrupt { print "\n"; exit 0; }

$RPT = 15;				# lsof repeat time

# Set path to lsof.

if (($LSOF = &isexec("../lsof")) eq "") {	# Try .. first
    if (($LSOF = &isexec("lsof")) eq "") {	# Then try . and $PATH
	print "can't execute $LSOF\n"; exit 1
    }
}

# Read lsof -nPF0 output repeatedly from a pipe.

$| = 1;					# unbuffer output
$SIG{'INT'} = 'interrupt';		# catch interrupt
$proc = $files = $tcp = $udp = 0;
$progress="/";
open(P, "$LSOF -nPF0 -r $RPT|") || die "can't open pipe to $LSOF\n";

LSOF_LINE:

while (<P>) {
    chop;
    if (/^m/) {

# A marker line signals the end of an lsof repetition.

printf "%s  Processes: %5d,  Files: %6d,  TCP: %6d, UDP: %6d\r",
	    $progress, $proc, $files, $tcp, $udp;
	$proc = $files = $tcp = $udp = 0;
	if ($progress eq "/") { $progress = "\\"; } else { $progress = "/"; }
	next LSOF_LINE;
    }
    if (/^p/) {

# Count process.

$proc++;
	next LSOF_LINE;
    }
    if (/^f/) {

# Count files.

$files++;
	@F = split("\0", $_, 999);
	foreach $i (0 .. ($#F - 1)) {

# Search for protocol field.

if ($F[$i] =~ /^P(.*)/) {

# Count instances of TCP and UDP protocols.

if ($1 eq "TCP") { $tcp++; }
		elsif ($1 eq "UDP") { $udp++; }
		next LSOF_LINE;
	    }
	}
    }
}

## isexec($path) -- is $path executable
#
# $path   = absolute or relative path to file to test for executabiity.
#	    Paths that begin with neither '/' nor '.' that arent't found as
#	    simple references are also tested with the path prefixes of the
#	    PATH environment variable.

sub
isexec {
    my ($path) = @_;
    my ($i, @P, $PATH);

$path =~ s/^\s+|\s+$//g;
    if ($path eq "") { return(""); }
    if (($path =~ m#^[\/\.]#)) {
	if (-x $path) { return($path); }
	return("");
    }
    $PATH = $ENV{PATH};
    @P = split(":", $PATH);
    for ($i = 0; $i <= $#P; $i++) {
	if (-x "$P[$i]/$path") { return("$P[$i]/$path"); }
    }
    return("");
}

#!/usr/bin/perl # # count_pf.perl5 -- run lsof in repeat mode and count processes and # files sub interrupt { print "\n"; exit 0; } $RPT = 15; # lsof repeat time # Set path to lsof. if (($LSOF = &isexec("../lsof")) eq "") { # Try .. first if (($LSOF = &isexec("lsof")) eq "") { # Then try . and $PATH print "can't execute $LSOF\n"; exit 1 } } # Read lsof -nPF0 output repeatedly from a pipe. $| = 1; # unbuffer output $SIG{'INT'} = 'interrupt'; # catch interrupt $proc = $files = $tcp = $udp = 0; $progress="/"; open(P, "$LSOF -nPF0 -r $RPT|") || die "can't open pipe to $LSOF\n"; LSOF_LINE: while (

) { chop; if (/^m/) { # A marker line signals the end of an lsof repetition. printf "%s Processes: %5d, Files: %6d, TCP: %6d, UDP: %6d\r", $progress, $proc, $files, $tcp, $udp; $proc = $files = $tcp = $udp = 0; if ($progress eq "/") { $progress = "\\"; } else { $progress = "/"; } next LSOF_LINE; } if (/^p/) { # Count process. $proc++; next LSOF_LINE; } if (/^f/) { # Count files. $files++; @F = split("\0", $_, 999); foreach $i (0 .. ($#F - 1)) { # Search for protocol field. if ($F[$i] =~ /^P(.*)/) { # Count instances of TCP and UDP protocols. if ($1 eq "TCP") { $tcp++; } elsif ($1 eq "UDP") { $udp++; } next LSOF_LINE; } } } } ## isexec($path) -- is $path executable # # $path = absolute or relative path to file to test for executabiity. # Paths that begin with neither '/' nor '.' that arent't found as # simple references are also tested with the path prefixes of the # PATH environment variable. sub isexec { my ($path) = @_; my ($i, @P, $PATH); $path =~ s/^\s+|\s+$//g; if ($path eq "") { return(""); } if (($path =~ m#^[\/\.]#)) { if (-x $path) { return($path); } return(""); } $PATH = $ENV{PATH}; @P = split(":", $PATH); for ($i = 0; $i <= $#P; $i++) { if (-x "$P[$i]/$path") { return("$P[$i]/$path"); } } return(""); }