check whether diff accepts -N

diff --git a/regress/scp3.sh b/regress/scp3.sh
index ef316c099414005c984a27d7792264c37acc0495..d42abc2dc8242bea9562f1273c4996f93f1e3c2a 100644 (file)
--- a/regress/scp3.sh
+++ b/regress/scp3.sh
@@ -8,6 +8,11 @@ DIR=${COPY}.dd
 DIR2=${COPY}.dd2
 DIFFOPT="-rN"
 
+# Figure out if diff does not understand "-N"
+if ! diff -N ${SRC}/scp.sh ${SRC}/scp.sh 2>/dev/null; then
+       DIFFOPT="-r"
+fi
+
 maybe_add_scp_path_to_sshd
 
 SRC=`dirname ${SCRIPT}`