Add check-version.sh script

check-version.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+URL="https://archive.mozilla.org/pub/nspr/releases/"
+
+# Get version number from tag name
+VERSION=$(curl -s -L "$URL" | grep -o -E 'v[0-9]{1,}.[0-9]{1,}(.[0-9]{1,})?' | sort -V | tail -n1)
+
+# Trim 'v' character in VERSION variable
+VERSION=$(echo "$VERSION" | tr -d 'v')
+
+echo "$VERSION"