X-Git-Url: http://git.tuebingen.mpg.de/?p=gsu.git;a=blobdiff_plain;f=common;fp=common;h=e3268907a385cb5417ac60796f2f0a50fcbeed2f;hp=fe64cd6b61f690d6ad06da0b2cae747e2ba1f308;hb=5829a1d41d45ea6a8ce04292c8f4c9487a4414a4;hpb=a149aac26f256c962a8787466dc0b8b282aff87b

diff --git a/common b/common
index fe64cd6..e326890 100644
--- a/common
+++ b/common
@@ -39,7 +39,7 @@ EOF
 gsu_is_a_number()
 {
 	result="$1"
-	if (("$1" == "$1")) &> /dev/null; then
+	if [ "$1" -eq "$1" ] &> /dev/null; then
 		ret=$GSU_SUCCESS
 	else
 		ret=-$E_GSU_NOT_A_NUMBER