Quick Tip

Harnessing `xargs` with `-P` for Parallelism

Challenge: You have a list of files or items, and you need to perform the same operation on each of them, but doing it sequentially is too slow.

The Solution: Use `xargs` with the `-P` option to execute commands in parallel.

find . -name "*.log" | xargs -P 4 -I {} sh -c 'gzip "{}" && echo "Compressed: {}"'

Why it works: The `-P 4` option tells `xargs` to run up to 4 processes concurrently. This significantly speeds up operations on large numbers of files or items by utilizing multiple CPU cores.

Pro-Tip: Always start with a small number for `-P` and monitor your system’s load to find the optimal balance for your hardware and the task.

Linux Tips & Tricks | © ngelinux.com | 4/26/2026