postinst is in apt-file 2.5.2ubuntu1.
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 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #!/bin/sh
set -e
if [ "$1" != configure ]; then
exit 0
fi
# fix wrong permissions created by old versions
if [ -n "$2" ] &&
dpkg --compare-versions "$2" lt 2.1.5~ &&
! dpkg-statoverride --list /var/cache/apt/apt-file > /dev/null 2>&1
then
chmod 755 /var/cache/apt/apt-file
fi
unud=/var/lib/update-notifier/user.d
if /usr/share/apt-file/is-cache-empty; then
echo "The system-wide cache is empty. You may want to run 'apt-file update'"
echo "as root to update the cache. You can also run 'apt-file update' as"
echo "normal user to use a cache in the user's home directory."
fi
if [ -d $unud ]; then
cp -f /usr/share/apt-file/apt-file-update.update-notifier \
"$unud/apt-file-update"
fi
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