Add script to change wallpaper

change-wallpaper.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env zsh
+set -euo pipefail
+
+DIR="$HOME/Pictures/wallpaper"
+TMPLIST="/tmp/wallpaper-list"
+if [[ ! -e "$TMPLIST" ]]; then
+    FILES=$(ls $DIR | shuf)
+    echo "$FILES" >> "$TMPLIST"
+fi
+
+IMG=$(tail -n1 $TMPLIST)
+truncate -s "-$(( ${#IMG} + 1 ))" $TMPLIST
+feh "$DIR/$IMG" --bg-fill
+grep -q '[^[:space:]]' < "$TMPLIST" || rm "$TMPLIST"