config() { NEW="$1" OLD="$(dirname $NEW)/$(basename $NEW .new)" if [ ! -r $OLD ]; then mv $NEW $OLD elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then rm $NEW fi } preserve_perms() { NEW="$1" OLD="$(dirname $NEW)/$(basename $NEW .new)" if [ -e $OLD ]; then cp -a $OLD ${NEW}.incoming cat $NEW > ${NEW}.incoming mv ${NEW}.incoming $NEW fi config $NEW } config etc/postfix/postgrey_whitelist_clients.new config etc/postfix/postgrey_whitelist_recipients.new config etc/postgrey.conf.new preserve_perms etc/rc.d/rc.postgrey.new