Merge pull request 'Use the -u option in sort, simplify array $existing_dirs' (#19) from rokosun-patch-1 into main

Reviewed-on: #19

bin/periodic/fix-zombie-appicons

@@ -46,7 +46,7 @@ fixfiles() {
 			mv "$file" "$bakdir/$name.bak"
 	done < "$data"
 
-	[ "$copied" = 'true' ] && [ "$(stat -c '%Y' "$data")" = "$lastmod" ] && sort "$tmp" | uniq > "$data"
+	[ "$copied" = 'true' ] && [ "$(stat -c '%Y' "$data")" = "$lastmod" ] && sort -u "$tmp" > "$data"
 
 	for bakfile in "$bakdir"/*.desktop.bak; do
 		name=$(basename "${bakfile%.bak}") || continue
@@ -61,9 +61,8 @@ fixfiles() {
 	done
 }
 
-existing_dirs=()
 for dir in "$user" "$pacman_global" "$pacman_local" "$flatpak_global" "$flatpak_local" "$snap"; do
-	[ -d "$dir" ] && existing_dirs=("${existing_dirs[@]}" "$dir")
+	[ -d "$dir" ] && existing_dirs+=("$dir")
 done
 
 detectfiles