postinst is in libdbus-1-3 1.4.18-1ubuntu1.8.
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 | #!/bin/sh
set -e
if [ "$1" = configure ]; then
# Before we shutdown or reboot, upstart needs to re-exec
# so that it can safely unmount the root filesystem (LP: #740390)
touch /var/run/init.upgraded || :
fi
# Automatically added by dh_makeshlibs
if [ "$1" = "configure" ]; then
ldconfig
fi
# End automatically added section
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