Remove all bashisms; drop grml-muttng

[grml-scripts-core.git] / usr_sbin / blacklist

diff --git a/usr_sbin/blacklist b/usr_sbin/blacklist
index ff1189a..ff9f2d0 100755 (executable)
--- a/usr_sbin/blacklist
+++ b/usr_sbin/blacklist
@@ -16,7 +16,7 @@ if [ -z "$1" ] ; then
   exit 1
 fi
 
-if [ $UID != 0 ] ; then
+if [ "$(id -ru)" != "0" ] ; then
    echo Error: become root before starting $0 >& 2
    exit 100
 fi