post_install() {
    groupadd irc
    useradd -G irc ircd
    chown -R ircd.irc /var/log/ircd
    chown -R ircd.irc /var/lib/ircd
}

post_upgrade() {
    chown -R ircd.irc /var/log/ircd
    chown -R ircd.irc /var/lib/ircd
}

post_remove() {
    echo "-- Don't forget to remove ircd user and irc group if you do not use it"
}