Script than enables or disables a device

endisdevice.sh

#!/bin/bash

#--------------------------------------------------------------------
# Authur: Fredrik "kd35a" Strandin <fredrik [at] strandin (dot) name>
# License: WTFPL (Do What The Fuck You Want To Public License)
# ---
# Disable or enables a specific input device.
# Use 'xinput --list' to see which device you want to enable/disable.
#--------------------------------------------------------------------

# Configuration

# Which device to enable or disable, see 'xinput --list'.
DEV=$(xinput --list --id-only "AT Translated Set 2 keyboard")

# End of configuration

if [ ! "$#" -eq 1 ]; then
	echo "Error, wrong number of parameters. Usage: '$0 < enable | disable >'"
	exit 1;
fi

if [ "$1" == "enable" ]; then
	DISPLAY=:0.0 xinput set-int-prop $DEV "Device Enabled" 8 1;
	exit 0;
fi

if [ "$1" == "disable" ]; then
	DISPLAY=:0.0 xinput set-int-prop $DEV "Device Enabled" 8 0;
	exit 0;
fi

echo "Lol, only 'enable' and 'disable' are valid arguments";