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 } if [ -x /usr/bin/update-desktop-database ]; then /usr/bin/update-desktop-database usr/share/applications >/dev/null 2>&1 fi # Prepare the new configuration files config etc/vbox/vbox.cfg.new config etc/default/virtualbox.new preserve_perms etc/rc.d/rc.vboxdrv.new