First commit

README.md

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+# Archlinux Stale Kernel Check
+
+This small script compares the running kernel version (`uname -r`) and the
+kernel version on the filesystem (`file /boot/vmlinuz-linux`). If the versions
+differ, it prints "Reboot required.". If not, it prints "No reboot required."
+

is-reboot-required.sh

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+#!/bin/bash
+
+set -euo pipefail
+IFS=$'\n\t'
+
+RUNNING_VERSION=$(uname -r)
+FS_VERSION=$(file /boot/vmlinuz-linux | sed -rn 's/.* version ([0-9\.A-Z-]+) .*/\1/p')
+
+if [ ! "${RUNNING_VERSION}" = ${FS_VERSION} ]; then
+    echo "Reboot required."
+else
+    echo "No reboot required."
+fi
+