postinst is in passwd 1:4.1.5.1-1ubuntu9.
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 34 35 36 37 38 39 40 41 42 | #!/bin/sh -e
case "$1" in
configure)
# Fix permissions on various log files from old versions of the debian
# installer, some unrelated to passwd but we decided to put the fix
# here since there was no better place. This can safely be removed
# after etch is released.
if dpkg --compare-versions "$2" lt "1:4.0.14-9"; then
for log in /var/log/base-config* \
$(find /var/log/debian-installer/ /var/log/installer/ -type f 2>/dev/null ); do
if [ -e "$log" ]; then
chmod 600 "$log"
fi
done
fi
rm -f /etc/pam.d/passwd.pre-upgrade 2>/dev/null
if ! getent group shadow | grep -q '^shadow:[^:]*:42'
then
groupadd -g 42 shadow || (
cat <<EOF
Group ID 42 has been allocated for the shadow group. You have either
used 42 yourself or created a shadow group with a different ID.
Please correct this problem and reconfigure with ``dpkg --configure passwd''.
Note that both user and group IDs in the range 0-99 are globally
allocated by the Debian project and must be the same on every Debian
system.
EOF
exit 1
)
fi
;;
esac
# Run shadowconfig only on new installs
[ -z "$2" ] && shadowconfig on
exit 0
|