My Macbook Air video configuration script for ArchLinux / DWM.

default.sh

#!/bin/sh
# Configuration file for my roaming profile. Disables external monitors.

xrandr --output HDMI1 --off

office.sh

#!/bin/sh
# Enables the monitor configuration at my office.

xrandr --output HDMI1 --auto
xrandr --output HDMI1 --pos 1441x0

update-outputs

#!/bin/bash
# Provides a simple wrapper to load configuration files by name.
#
# IE: `update-outputs office` would execute the `office.sh` script
#     in ~/.config/monitors/

requested_configuration="$1"
configurations_directory="${HOME}/.config/monitors/"
configuration_filename="${configurations_directory}${requested_configuration}.sh"
fallback_filename="${configurations_directory}default.sh"

if [[ -f "${configuration_filename}" ]]; then
  printf "Executing configuration: ${requested_configuration}\n"
  exec "${configuration_filename}"
else
  if [[ "${requested_configuration}" != "" ]]; then
    printf "Configuration not found for: ${requested_configuration}\nReverting to default.\n"
  fi
  exec "${fallback_filename}"
fi