Doing parallel processing in bash?

Question

I\'ve thousands of png files which I like to make smaller with pngcrush. I\'ve a simple find .. -exec job, but it\'s sequential. My machine has qui

Answer 1

With GNU Parallel http://www.gnu.org/software/parallel/ it can be done like:

find /path -print0 | parallel -0 pngcrush {} {.}.temp '&&' mv {.}.temp {} 

Learn more:

• Watch the intro video for a quick introduction: https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1
• Walk through the tutorial (man parallel_tutorial). You command line will love you for it.