dell_fans.sh

#!/bin/bash

########################################################################
###### Custom script to control my Dell XPS 9700 fans... ######
## Make sure there is a file in /etc/sudoers.d/ so that you can
## run this script without sudo. Execute the following:
##
## echo "entreri ALL=(ALL) NOPASSWD: /usr/bin/dell-bios-fan-control, /usr/bin/i8kctl" > /etc/sudoers.d/entreri-fan_control
## sudo chmod 0440 /etc/sudoers.d/entreri-fan_control
##
## Then add an alias for this script to ~/.bashrc: alias fans="~/.local/bin/entreri-fans.sh"
########################################################################

echo "Usage: [low|high] will set fan speed manually. [auto] will turn on automatic bios fan control. No arugment will show current fan status."

# # Check if there is exactly one argument provided
# if [ "$#" -ne 1 ]; then
#   echo "Usage: $0 [reset|low|high]"
#   exit 1
# fi

# Show current fan status
if [ "$#" -ne 1 ]; then
  echo "Checking current fan status..."
  i8kctl
  exit 0
fi

case $1 in
low)
  echo "Setting fan speed to low..."
  sudo dell-bios-fan-control 0
  sudo i8kctl fan 1 1
  ;;
high)
  echo "Setting fan speed to high..."
  sudo dell-bios-fan-control 0
  sudo i8kctl fan 2 2
  ;;
reset | bios | auto)
  echo "Resetting fan control to BIOS control..."
  sudo dell-bios-fan-control 1
  ;;
*)
  echo "Error: Invalid argument. Use 'auto', 'low', or 'high'."
  exit 2
  ;;
esac