postinst is in bash-static 4.4.18-2ubuntu1.
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 | #! /bin/sh
set -e
if [ "$1" = configure ] && dpkg --compare-versions "$2" le 3.2-4 \
&& which add-shell >/dev/null
then
add-shell /bin/bash-static
fi
exit 0
|