postinst is in grml-rescueboot 0.4.4.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | #!/bin/sh
# postinst script for grml-rescueboot
set -e
update_grub_wrapper() {
# default, unless configured otherwise:
ISO_LOCATION=/boot/grml
if [ -r /etc/default/grml-rescueboot ] ; then
. /etc/default/grml-rescueboot
fi
if ! ls "${ISO_LOCATION}"/*iso >/dev/null 2>&1 ; then
echo "INFO: No *.iso files found inside ${ISO_LOCATION}."
echo "INFO: Please create ${ISO_LOCATION} and place rescue ISO(s) there."
echo "INFO: Finally invoke update-grub and enjoy your rescue system."
return 0
fi
if ! which update-grub >/dev/null 2>&1; then
echo "WARN: ISOs found inside ${ISO_LOCATION} but update-grub not present (huh?)"
return 0
fi
if ! [ -e /boot/grub/grub.cfg ] ; then
echo "WARN: ISOs found inside ${ISO_LOCATION} but /boot/grub/grub.cfg does not exist."
echo "WARN: Ignoring request to run update-grub to avoid possible boot loader problems."
return 0
fi
echo "INFO: ISOs found inside ${ISO_LOCATION}, invoking update-grub:"
update-grub
}
case "$1" in
configure)
update_grub_wrapper
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
exit 0
|