Fix bashism/non-POSIX usage of $UID.

[grml-network.git] / sbin / grml-vpnc-tugraz

diff --git a/sbin/grml-vpnc-tugraz b/sbin/grml-vpnc-tugraz
index 05fa947..0fc6bf3 100755 (executable)
--- a/sbin/grml-vpnc-tugraz
+++ b/sbin/grml-vpnc-tugraz
@@ -12,7 +12,7 @@
 export LANG=C
 export LC_ALL=C
 
-if [ "$UID" != 0 ];  then
+if [ $(id -ru) -ne 0 ] ; then
   sudo $0
   exit
 fi