Stuff

#!/bin/sh
# helper script to help removing a mail alias file to system MTA

if [ $# != 3 ]; then
    echo "usage: $0 <pkg name> <number installed> <file>" 1>&2
    exit 1
fi

pkg=$1	# name of the package
num=$2	# number of packages installed
file=$3	# alias file to add

# only needed for uninstallation
if [ $num = 0 ]; then
    # check mta
    mta="`readlink /etc/alternatives/sendmail-command 2>/dev/null | cut -d . -f 2`"
    if [ "$mta" == "postfix" ]; then
	maps=`/usr/sbin/postconf -h alias_maps | sed -e 's|, hash:$file||'`
	database=`/usr/sbin/postconf -h alias_database | sed -e 's|, hash:$file||'`

	postconf -e \
	    "alias_maps = $maps" \
	    "alias_database = $database"
    else
	sed -i \
	    -e '/^# added by $pkg rpm/d' \
	    -e '/^:include:$file$/d' \
	    /etc/aliases
    fi

    newaliases
fi