GNU Parallel can be sourced into a bash session from a plain text file and used as a function. I've used it to get around overly-restrictive build environments.

GNU Parallel can be sourced into a bash session from a plain text file and used as a function. I've used it to get around overly-restrictive build environments. (overly restrictive because the team that manages the build image wasn't open to modifying their image for my use case)