Added uninstall.sh

uninstall.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+# install.sh / uninstall.sh — Custom MOTD installer
+# Symlink or rename this file; behaviour switches on the script name.
+set -euo pipefail
+ 
+TARGET="/etc/profile.d/motd.sh"
+MOTD_D="/etc/update-motd.d"
+ 
+if [[ $EUID -ne 0 ]]; then
+  echo "Error: run as root (sudo $0)" >&2
+  exit 1
+fi
+ 
+echo "Removing $TARGET..."
+rm -f "$TARGET"
+echo "Re-enabling default MOTD scripts..."
+chmod +x "$MOTD_D"/*
+echo "Done."