Add touchscreen toggle script, change scripts to be POSIX compliant

.scripts/wm/brightness.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 case $BLOCK_BUTTON in
 	3) xbacklight -set 30 ;; # right click
@@ -8,9 +8,9 @@ esac
 
 PERCENTAGE=$(printf  "%.0f" "$(xbacklight)")
 
-if (( $PERCENTAGE >= 75 )); then
+if $(( $PERCENTAGE >= 75 )); then
 	ICON=""
-elif (( $PERCENTAGE >= 25 )); then
+elif $(( $PERCENTAGE >= 25 )); then
 	ICON=""
 else 
 	ICON=""

.scripts/wm/lock.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 ICON="$HOME/Pictures/lock.png"
 TMPBG='/tmp/screen.png'

.scripts/wm/touchscreen.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+device="04F3200A:00 04F3:2373"
+state=$(xinput --list-props "$device" | grep "Device Enabled" | sed -nr 's/.*:\t([0-9])/\1/p')
+
+if [ "$state" = "0" ]; then
+	xinput set-prop "$device" 140 1
+else
+	xinput set-prop "$device" 140 0
+fi
+

.scripts/wm/volume.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # default (ALSA), pulse, jack
 MIXER="pulse"