Comment by barrkel

If you have a lot of files, consider find piped to xargs with -P for parallelism and -n to limit the number of files per parallel invocation.

Only a tiny bit more complex but often an order of magnitude faster with today's CPUs.

Use -print0 on find with -0 on xargs to handle spaces in filenames correctly.

GNU parallel is another step up, but xargs is generally always to hand.