On Wed, Apr 09, 2014 at 03:12:40PM +0200, Alex Mestiashvili wrote: > | > find . -name "*.png" | parallel -P8 convert -quality 95 {} -geometry 1280 /tmp/{.}.jpg| Alternatively find . -name "*.png" -exec convert -quality 95 {} -geometry 1280 /tmp/{}.jpg + note '+' not '\;' which denotes to run jobs in parallel (here, not specifying a max concurrency limit)