Remove bashisms from scripts

.scripts/lock.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 playerctl pause
 

.scripts/screenconf.sh

@@ -1,7 +1,11 @@
-#!/bin/bash
+#!/bin/sh
 
-CHOICE=$(echo -e "left-of\nbelow" | dmenu)
+CHOICE=$(dmenu -i -b << EOF
+left-of
+below
+EOF
+)
 
-xrandr --output HDMI-0 --auto --$CHOICE DP-2
+xrandr --output HDMI-0 --auto --"$CHOICE" DP-2
 
 ~/.scripts/set_background.sh

.scripts/screenshot.sh

@@ -1,8 +1,8 @@
-#!/bin/bash
+#!/bin/sh
 maim -us screenshot.png
 
 UUID=$(uuidgen)
-UUID="${UUID[@]:0:5}"
+UUID="${UUID[*]:0:5}"
 
 scp screenshot.png "frans@tankernn.eu:/srv/www/scr/$UUID.png"
 

.scripts/set_background.sh

@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/bin/sh
 feh --bg-fill ~/desktop_background.png