4-zram.sh

#!/bin/bash
#  _________      _    __  __ 
# |__  /  _ \    / \  |  \/  |
#   / /| |_) |  / _ \ | |\/| |
#  / /_|  _ <  / ___ \| |  | |
# /____|_| \_\/_/   \_\_|  |_|
#
# by Stephan Raabe (2023)                            
# -----------------------------------------------------
# ZRAM Install Script
# yay must be installed
# -----------------------------------------------------
# NAME: ZRAM Installation
# DESC: Installation script for zram.
# WARNING: Run this script at your own risk.

clear
echo " _________      _    __  __ "
echo "|__  /  _ \    / \  |  \/  |"
echo "  / /| |_) |  / _ \ | |\/| |"
echo " / /_|  _ <  / ___ \| |  | |"
echo "/____|_| \_\/_/   \_\_|  |_|"
echo ""

# -----------------------------------------------------
# Confirm Start
# -----------------------------------------------------
while true; do
    read -p "DO YOU WANT TO START THE INSTALLATION NOW? (Yy/Nn): " yn
    case $yn in
        [Yy]* )
            echo "Installation started."
        break;;
        [Nn]* ) 
            exit;
        break;;
        * ) echo "Please answer yes or no.";;
    esac
done

# -----------------------------------------------------
# Install zram
# -----------------------------------------------------
yay --noconfirm -S zram-generator

# -----------------------------------------------------
# Open zram-generator.conf
# -----------------------------------------------------
if [ -f "/etc/systemd/zram-generator2.conf" ]; then
    echo "/etc/systemd/zram-generator.conf already exists!"
else
	sudo touch /etc/systemd/zram-generator.conf
	sudo bash -c 'echo "[zram0]" >> /etc/systemd/zram-generator.conf'
	sudo bash -c 'echo "zram-size = ram / 2" >> /etc/systemd/zram-generator.conf'
    sudo systemctl daemon-reload
    sudo systemctl start /dev/zram0
fi

echo "DONE! Reboot now and check with free -h the ZRAM installation."