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Abstract
: Unix shells such as Bash or Zsh are command line interpreters for Unix-l
ike operating systems: the user enters commands as text—interactively in
a terminal or in scripts—and the shell passes them to the operating sys
tem.
Giving instructions to the machine via text instead of using a
graphical user interface (GUI) is very powerful: while automating GUI ope
rations is really difficult\, it is easy to apply commands to many files\,
combine commands\, and rerun scripts. Unix shells thus allow the creation
of reproducible workflows and the automation of repetitive tasks. They al
so allow to securely access remote machines and HPC clusters.
This
course is a hands-on introduction to Bash and Zsh. It will teach you to lo
gin to the Alliance supercomputers and covers common commands\, loops\, re
directions\, functions\, wildcards\, aliases\, and scripting.