#!/bin/sh
+CACHE=$HOME/.dmenu_cache
IFS=:
-for dir in $PATH
-do
- for file in "$dir"/*
+
+uptodate() {
+ test -f "$CACHE" &&
+ for dir in $PATH
do
- test -x "$file" && echo "${file##*/}"
+ test ! $dir -nt "$CACHE" || return 1
done
-done | sort -u
+}
+
+if ! uptodate
+then
+ for dir in $PATH
+ do
+ cd "$dir" &&
+ for file in *
+ do
+ test -x "$file" && echo "$file"
+ done
+ done | sort -u > "$CACHE".$$ &&
+ mv "$CACHE".$$ "$CACHE"
+fi
+
+cat "$CACHE"