This file is indexed.

postinst is in update-notifier-common 3.192.

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
#!/bin/sh

set -e

# fixup /var/crash permissions (#449739)
if [ "$1" = configure ] && dpkg --compare-versions "$2" le-nl "0.89"; then
    if [ -d /var/crash ] && [ "$(stat -L -c '%a' /var/crash)" = "755" ]; then
        chmod 1777 /var/crash
    fi
fi

if [ "$1" = triggered ]; then
	for trigger in $2; do
		case $trigger in
			/usr/share/package-data-downloads)
				/usr/lib/update-notifier/package-data-downloader
				;;
		esac
	done
	exit 0
fi

# Ensure permissions are correct, otherwise downloading sandboxing fails
chown -R _apt:root /var/lib/update-notifier/package-data-downloads/partial/
chmod 700 /var/lib/update-notifier/package-data-downloads/partial/

# Run this when configuring as well, since we may not be triggered at all
# depending on package unpack order.
/usr/lib/update-notifier/package-data-downloader

# Remove update-motd cpu-checker script
dpkg-maintscript-helper rm_conffile /etc/update-motd.d/20-cpu-checker \
        0.110.1ubuntu1 -- "$@"