#!/bin/bash while IFS= read -r line; do # If the line starts with # and the next line is not the lines to be added if [[ $line == \#HandleLidSwitchDocked=ignore ]]; then # Add the new lines echo "HandleLidSwitchDocked=ignore" | sudo tee -a /etc/systemd/logind.conf > /dev/null fi if [[ $line == \#HoldoffTimeoutSec=5s ]]; then # Add the new lines echo "HoldoffTimeoutSec=5s" | sudo tee -a /etc/systemd/logind.conf > /dev/null fi done < /etc/systemd/logind.conf