Shell Scripting: Using xargs to execute parallel instances of a shell function

Question

I\'m trying to use xargs in a shell script to run parallel instances of a function I\'ve defined in the same script. The function times the fetching of a page, and so it\'s impo

Answer 1

On Mac OS X:

xargs: max. processes must be >0 (for: xargs -P [>0])

f() { echo "[$@]"; }
export -f f

echo -e "b 1\nc 2\nd 3 4" | sed 's/ /\\ /g' | xargs -P 10 -n 1 -I{} bash -c f\ \{\}

echo -e "b 1\nc 2\nd 3 4" | xargs -P 10 -I '{}' bash -c 'f "$@"' arg0 '{}'