X-Git-Url: http://git.tuebingen.mpg.de/?p=gsu.git;a=blobdiff_plain;f=common;h=e3268907a385cb5417ac60796f2f0a50fcbeed2f;hp=fe64cd6b61f690d6ad06da0b2cae747e2ba1f308;hb=8c4ae5b0f1b839dea40d7aae40de5e15b325ff35;hpb=77fd8c08604bb7a1c641c4f36bdf4f839d114656

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