Edit: /etc/kernel/postinst.d/initramfs-tools (863B)
#!/bin/sh -e
version="$1"
bootopt=""
command -v update-initramfs >/dev/null 2>&1 || exit 0
# passing the kernel version is required
if [ -z "${version}" ]; then
echo >&2 "W: initramfs-tools: ${DPKG_MAINTSCRIPT_PACKAGE:-kernel package} did not pass a version number"
exit 2
fi
# exit if kernel does not need an initramfs
if [ "$INITRD" = 'No' ]; then
exit 0
fi
# absolute file name of kernel image may be passed as a second argument;
# create the initrd in the same directory
if [ -n "$2" ]; then
bootdir=$(dirname "$2")
bootopt="-b ${bootdir}"
fi
# avoid running multiple times
if [ -n "$DEB_MAINT_PARAMS" ]; then
eval set -- "$DEB_MAINT_PARAMS"
if [ -z "$1" ] || [ "$1" != "configure" ]; then
exit 0
fi
fi
# we're good - create initramfs. update runs do_bootloader
# shellcheck disable=SC2086
update-initramfs -c -k "${version}" ${bootopt} >&2