Linux/Basic commands/parallel

parallel allows the user to execute shell scripts or commands in parallel.

Basic

 * 1) /Execute a command in parallel by ssh/ in MACHINE1 and MACHINE2 using parallel
 * 2) Read stackexchange questions about gnu-parallel: https://unix.stackexchange.com/questions/tagged/gnu-parallel?tab=votes&pagesize=50
 * 3) Install parallel in macOS:   can conflict with

Intermediate

 * 1) Review different parallel options such as:   or   which keep order in the output. Do not affect order of execution.
 * 2) Update all your git repositories in a directory in macOS using parallel: