MawKKe

#!/usr/bin/env bash
# 
#    Author: Markus (MawKKe) [email protected]
#    Date: 2018-03-19
#
#
# What?
#
#    Linux dm-crypt + dm-integrity + dm-raid (RAID1) 
#

kriswebdev

#!/bin/bash

# === INFO ===
# NoVPN
# Description: Bypass VPN tunnel for applications run through this tool.
VERSION="3.0.0"
# Author: KrisWebDev
# Requirements:  Linux with kernel > 2.6.4 (released in 2008).
#                This version is tested on Ubuntu 14.04 and 19.10 with bash.
#                Main dependencies are automatically installed.

mutability

- install the two shellscripts into the appropriate places under /etc/initramfs-tools
- run update-initramfs
- put "overlay=yes" on the kernel command line
- reboot

With the overlay in place, the real root is mounted readonly on /ro.
Only the root fs is changed, other filesystems are mounted normally.

Remove "overlay=yes" (or change it to something other than yes) and reboot to go back to readwrite.
(This probably means that you want the commandline config to live somewhere other than on the root fs, e.g. under /boot)