prerm is in med-his 2.1ubuntu4.
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 | #!/bin/sh
set -e
# This is the default prerm file from the blends-dev package which is used
# in all meta packages.  If there is a certain need to provide extra
# prerm files for some meta packages this template will be appended.  Thus
# it will be checked whether debconf was just initialized.
#
# You should not insert the _DEBHELPER_ template in the special postscript
# file because it is in the end of this template anyway.
###########################################################################
# If the user menus are not needed/wished for a Blend (like for instance
# Debian Edu there is no need to install blends-common package.  Thus we
# have to make sure that postinst does not try to include the menu stuff
# The most portable way to test a program for existence
# This fixes https://lintian.debian.org/tags/command-with-path-in-maintainer-script.html
pathfind() {
    OLDIFS="$IFS"
    IFS=:
    for p in $PATH; do
        if [ -x "$p/$*" ]; then
            IFS="$OLDIFS"
            return 0
        fi
    done
    IFS="$OLDIFS"
    return 1
}
if [ -d /etc/blends -a -f /etc/blends/blends.conf ] ; then
    # Also verify that this Blend provides special configuration
    # If not there is no need to execute the user menu code
    if [ -d /etc/blends/med -a -s /etc/blends/med/med.conf -a -s /etc/blends/blends.conf ] ; then
	if pathfind blend-update-usermenus ; then
	    . /etc/blends/blends.conf
	    . /etc/blends/med/med.conf
	    blend-update-menus --blend med 
	    
	    # Initialize debconf if not yet done
	    if [ _"$DEBCONF_REDIR" = _"" ]; then
    		. /usr/share/debconf/confmodule
    		db_version 2.0
	    fi
	    case "$1" in
		deconfigure|failed-upgrade|upgrade)
		    ;;
		remove|purge)
		    db_get "shared/med-config/usermenus" || true
		    case "$RET" in
			"Each package installation")
			    blend-update-usermenus med
			;;
			"End of installation")
			    touch /var/run/med-config.usermenu
			;;
		    esac
		    ;;
		*)
		    echo "prerm called with unknown argument \`$1'" >&2
		    exit 1
		    ;;
	    esac
	fi
    fi
fi
exit 0
 |