Check whether lsof and gdb are available

kill-wpull-connections

@@ -30,6 +30,18 @@ then
 	wpullPid=${pids[0]}
 fi
 
+if ! command -v lsof >/dev/null 2>&1
+then
+	echo "Error: could not find lsof"
+	exit 1
+fi
+
+if ! command -v gdb >/dev/null 2>&1
+then
+	echo "Error: could not find gdb"
+	exit 1
+fi
+
 if ! kill -0 ${wpullPid} >/dev/null 2>&1
 then
 	echo "Error: no process with PID ${wpullPid}"