#!/bin/bash

# Description:
# This script allows the user to select a CPU frequency scaling governor mode.
# The governor controls the trade-off between performance and power consumption.
# Available modes typically include "performance", "powersave", "ondemand", "conservative", and "schedutil".

# Usage:
# 1. Save this script to a file, e.g., set_cpu_mode.sh.
# 2. Make the script executable with the command: chmod +x set_cpu_mode.sh.
# 3. Run the script with: sudo ./set_cpu_mode.sh.
# 4. Follow the on-screen prompts to select the desired CPU governor mode.

# Ask the user to choose a mode
echo "Please choose a CPU frequency scaling governor mode:"
echo "1. performance"
echo "2. powersave"
echo "3. ondemand"
echo "4. conservative"
echo "5. schedutil"
read -p "Enter the number corresponding to your choice: " choice

# Array of available modes
modes=("performance" "powersave" "ondemand" "conservative" "schedutil")

# Check if the choice is valid
if [[ $choice -ge 1 && $choice -le ${#modes[@]} ]]; then
    selected_mode=${modes[$choice-1]}
    echo "$selected_mode" | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
    echo "The $selected_mode mode has been applied."
else
    echo "Invalid choice. No mode was applied."
fi