postinst is in rancid 3.3.0-1.
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 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | #! /bin/sh 
# postinst script for rancid
#
# see: dh_installdeb(1)
set -e
. /usr/share/debconf/confmodule
db_version 2.0
# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.
case "$1" in
    configure)
        # change wrong shell /bin/false for user rancid to /bin/bash:
	case "`getent passwd rancid`" in
	    *:/bin/false)
	    usermod -s /bin/bash rancid
	    ;;
	esac
	if ! [ -f /etc/rancid/rancid.types.conf ]; then
		touch /etc/rancid/rancid.types.conf
	fi
    	db_get "rancid/warning" || true
    	db_get "rancid/go_on" && true
	[ "$RET" = "false" ] && exit 0
	if ! `getent passwd rancid >/dev/null`; then
		adduser --system --group --home /var/lib/rancid --quiet \
		    --shell /bin/bash rancid
        fi
	if [ -d /var/log/rancid ]; then
		chown rancid:rancid /var/log/rancid
	fi
	if [ -d /var/lib/rancid ]; then
		chown rancid:rancid /var/lib/rancid
	fi
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
db_stop
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
 |