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-rw-r--r--scripts/probe.sh5
1 files changed, 5 insertions, 0 deletions
diff --git a/scripts/probe.sh b/scripts/probe.sh
index 70867cdb..093a16dc 100644
--- a/scripts/probe.sh
+++ b/scripts/probe.sh
@@ -1,5 +1,10 @@
set -e
+if [ "$#" -lt 2 ] ; then
+ echo 'usage: probe.sh var command...' >&2
+ exit 2
+fi
+
var=$1
shift
if "$@" 2>/dev/null ; then