Add check-version.sh script

check-version.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+URL="https://dist.schmorp.de/libptytty/"
+
+# Get version number from FTP server
+VERSION=$(curl -s -L "$URL" | grep -o -E 'libptytty-[0-9]{1,}\.[0-9]{1,}.tar.gz' | head -n1 | cut -d '-' -f2 | tail -n1)
+
+# Remove '.tar.gz' suffix from VERSION variable
+VERSION=${VERSION//.tar.gz/}
+
+echo "$VERSION"