[Ubuntu Tip] Touch en/disable Hot Key

Hi, laptop linux users.

Most laptop have a touchpad problem that it sometimes is touched when pressing keys, which annoying me when I making codes.
I realized that I don't need touchpad enabled while eagerly pressing keys, so I decide make a hotkey enable/disable touchpad.

1. Open terminal

$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech USB Receiver id=11 [slave pointer (2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=14 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Sleep Button id=8 [slave keyboard (3)]
↳ Power Button id=9 [slave keyboard (3)]
↳ Logitech USB Receiver id=10 [slave keyboard (3)]
↳ LG HD WebCam id=12 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]

2. Try the command

$ xinput set-prop 14 "Device Enabled" "0"

Touch pad id is 14 (Elantech Touchpad)
Last "0" means disable touch, and "1" enable.

3. It's time to make a shell script.

Make "toggletouch.sh" in the $PATH directory.

#!/bin/bash
DNAME="Touchpad"
DEV=`xinput --list | grep "$DNAME"|cut -d= -f2|cut -c1,2`

STATE=`xinput list-props "$DEV" | grep "Device Enabled" | cut -f3`

if [ "$STATE" == "0" ]; then
SWITCH="1"
else
SWITCH="0"
fi

xinput set-prop "$DEV" "Device Enabled" "$SWITCH"

If your touch device doesn't have sub string "Touchpad", you need to change it.
DEV is 14 in the above xinput list.
STATE catches the current state "0" or "1"