initial commit

valid-ip.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# https://stackoverflow.com/questions/13777387/check-for-ip-validity
+function validip () {
+    ip=$1
+    if [ -z $ip ] || ! [[ $ip =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+        return 1
+    else
+        return 0
+    fi
+}