X-Git-Url: https://git.adam-barratt.org.uk/?a=blobdiff_plain;f=dsa-nagios-checks%2Fchecks%2Fdsa-check-running-kernel;h=452c8c1e82c10d63c4790cb1c856d5ce579e4f26;hb=a9a2e2fb94e486d35a951c85b144d6cdcc054e1c;hp=78255f71a55a8f3be19f69ba556290b96c45896b;hpb=f060cd469b7ae31ae606acb249210a9399fdbefe;p=mirror%2Fdsa-nagios.git

diff --git a/dsa-nagios-checks/checks/dsa-check-running-kernel b/dsa-nagios-checks/checks/dsa-check-running-kernel
index 78255f7..452c8c1 100755
--- a/dsa-nagios-checks/checks/dsa-check-running-kernel
+++ b/dsa-nagios-checks/checks/dsa-check-running-kernel
@@ -159,6 +159,10 @@ for on_disk in \
 	"/boot/kfreebsd-`uname -r`.gz"; do
 
 	if [ -e "$on_disk" ]; then
+		if [ ! -x "$(which strings)" ]; then
+			echo "UNKNOWN: 'strings' command missing, perhaps install binutils?"
+			exit $UNKNOWN
+		fi
 		if [ "${on_disk/vmlinu}" != "$on_disk" ]; then
 			on_disk_version="`get_image_linux "$on_disk" | strings | grep 'Linux version' | head -n1`"
 			[ -z "$on_disk_version" ] || break