overlayroot-switch

#!/bin/bash

ischroot=$(ls -di /)

if [ "$ischroot" != "2 /" ]; then
    echo "You probably are inside the upper filesystem."
    echo "To make changes permanent, you must run overlayroot-chroot first!!!"
else
    echo "You probably are inside the real root. TAKE EXTRA CARE!!!"
fi

case "$1" in
-e)
    cat /etc/overlayroot.conf | grep 'overlayroot=""' > /dev/null
        case "$?" in
        0)
        sed -i 's/overlayroot=""/overlayroot="tmpfs:swap=0,recurse=0"/' /etc/overlayroot.conf
                echo "Plase, see below if overlayroot was sucessfully enabled"
        cat /etc/overlayroot.conf
                ;;
        1)
                echo "Something went wrong!!! overlayroot is probably already enalbled."
        cat /etc/overlayroot.conf
                ;;
        *)
                echo "Something went REALY wrong!!!"
                ;;
        esac
        ;;
-d)
    cat /etc/overlayroot.conf | grep 'overlayroot="tmpfs"' > /dev/null
        case "$?" in
        0)
        sed -i 's/overlayroot="tmpfs:swap=0,recurse=0"/overlayroot=""/' /etc/overlayroot.conf
                echo "Plase, see below if overlayroot was sucessfully disabled"
        cat /etc/overlayroot.conf
                ;;
        1)
                echo "Something went wrong!!! overlayroot is probably already disabled."
        cat /etc/overlayroot.conf
                ;;
        *)
                echo "Something went REALY wrong!!!"
                ;;
        esac
        ;;
*)
        echo "You must pass an argument, either -e to enable or -d to disable overlayroot."
        ;;
esac