It is documented in the GNU Parallel documentation: https://www.gnu.org/software/parallel/parallel_alternatives.html#differences-between-xargs-and-gnu-parallel

It is documented in the GNU Parallel documentation: https://www.gnu.org/software/parallel/parallel_alternatives.html#differences-between-xargs-and-gnu-parallel https://www.gnu.org/software/parallel/parallel_alternatives.... If you seriously believe you can implement everything using xargs, then this (contrived) example is for you: https://unix.stackexchange.com/questions/405552/using-xargs-instead-of-gnu-parallel https://unix.stackexchange.com/questions/405552/using-xargs-... Newer versions include 'parset' which can set shell variables in parallel, which is useful if you want to 'map' values from one array to another.