#! /bin/sh set -e case "$1" in (purge) rm -f "${DPKG_ROOT:-}/etc/shells" "${DPKG_ROOT:-}/var/lib/shells.state" ;; (remove|disappear|upgrade|failed-upgrade|abort-install|abort-upgrade) ;; (*) echo "postrm called with unknown argument \`$1'" >&2 exit 1 ;; esac