bash: initial commit of fix-kernel-install.bash as a friend to fixgrub.bash

Yes, this is a horrible hack that looks horrible.

bash/deb-update.bash

@@ -118,5 +118,11 @@ if [ -f /root/fixgrub.bash ]; then
 	/root/fixgrub.bash
 fi
 
+# Lumina & Sedric have been having kernel update issues, let's see if this
+# script could detect and suggest action for that.
+if [ -f /root/fix-kernel-install.bash ]; then
+	/root/fix-kernel-install.bash
+fi
+
 # Hide commands being executed again
 set +x

bash/fix-kernel-install.bash

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+#set -x
+
+export LC_ALL=C.utf8
+
+# Check for existence of /etc/machine-id/
+if [ -f /etc/machine-id ]; then
+
+	# Check for existence of the /boot/<machine-id> directory
+	if [ -d /boot/efi/"$(cat /etc/machine-id)" ]; then
+
+		# Store the latest installed kernel to $EXPECTEDKERNEL
+		EXPECTEDKERNEL="$(find /lib/modules -maxdepth 1 -printf '%P\n' | sort | tail -n -1)"
+
+		# And actual kernel in the boot/efi directory
+		ACTUALKERNEL="$(find /boot/efi/"$(cat /etc/machine-id)"/ -maxdepth 1 -printf '%P\n' | sort | tail -n -1)"
+
+		# Are they the same? Everything OK!
+		if [ "$EXPECTEDKERNEL" == "$ACTUALKERNEL" ]; then
+			echo "The kernel situation seems OK."
+
+		else
+			printf "\nWARNING! Kernels mismatch! Suggested action:\n"
+			printf "\tsudo kernel-install add %b /lib/modules/%b/vmlinuz\n" "$EXPECTEDKERNEL" "$EXPECTEDKERNEL"
+		fi
+	fi
+fi
+
+#set +x