Reading files is no big deal with bash: you just redirect the input to the script or pipe the output of another command into the script, or you could do it inside the script if the file names are ...

File descriptor duplication allows two file descriptors to refer to the same open file. Since read normally reads from stdin and not file descriptor 7 or 8 we need a way to duplicate file descriptor 7 ...

Researchers have open-sourced pa.sh (also called pash), a tool that can dramatically speed up Linux scripts by using parallelization, saving time and without risk of introducing errors.

Jack Wallen explains the Linux source command by way of an example. Sourcing a file in Linux is a very important concept, but it might not be one you’ll use early on in your Linux career.