postinst is in virtualbox-guest-utils 4.1.12-dfsg-2.
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 | #!/bin/sh
set -e
# Automatically added by dh_installinit
if [ -x "/etc/init.d/virtualbox-guest-utils" ]; then
update-rc.d virtualbox-guest-utils defaults >/dev/null || exit $?
fi
# End automatically added section
if [ "$1" = configure ] && [ -n "$2" ] && \
[ -x /usr/share/update-notifier/notify-reboot-required ] && \
pidof VBoxService > /dev/null;
then
/usr/share/update-notifier/notify-reboot-required || true
fi
if [ "$1" = configure ] && [ -z `getent group vboxsf` ]; then
addgroup --system --quiet vboxsf
fi
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