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... } config etc/hostsblock/rc.conf.new # backup existing /etc/hosts to /etc/hostsblock/hosts.head if it doesn't already exist if [ ! -r etc/hostsblock/hosts.head ] ; then cp etc/hosts etc/hostsblock/hosts.head fi