I use homebrew and to my dismay I thought I had parallel installed as I see: which parallel /opt/homebrew/bin/parallel
but parallel --help /opt/homebrew/Cellar/moreutils/0.69/libexec/bin/parallel: illegal option -- - parallel [OPTIONS] command -- arguments for each argument, run command with argument, in parallel parallel [OPTIONS] -- commands run specified commands in parallel This is NOT GNU parallel. What is the right way to get GNU parallel running on a Mac? Alan