config() { NEW="$1" OLD="$(dirname $NEW)/$(basename $NEW .new)" # If there's no config file by that name, mv it over: if [ ! -r $OLD ]; then mv $NEW $OLD elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then # toss the redundant copy rm $NEW fi # Otherwise, we leave the .new copy for the admin to consider... } 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/cron.daily/exim.new config etc/logrotate.d/exim.new preserve_perms etc/rc.d/rc.exim.new