Linux/Basic commands/parallel

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

Activities

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: brew install parallel can conflict with brew install moreutils

Intermediate

1. Review different parallel options such as: --keep-order or -k 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: ls | parallel git -C {} fetch

See also

• xargs
• moreutils package