Intro to Linux and CLI

This lesson is building on top of previous lesson and you should already have:

• linux environment,
• github account,
• forked demo repository from https://github.com/eliska-chalupova/DSIB01demo,
• local clone of forked repository.

This lesson guides you through the basics of file systems and the command line interface (cli). If you have stored files on a computer at all and recognize the word “file” and either “directory” or “folder” (two common words for the same thing), you’re ready for this lesson.

Table of content

• Why to learn shell?
• Gentle introduction
• Getting help
• Navigating Files and Directories
• Interacting with Files
• Scripting
• Exercise

Summary

Commands

• ls: list a content of a directory
• cd: change current working directory
• pwd: print current working directory
• man: look up the manual page for a particular command
• mkdir: create a directory
• rmdir: remove and empty directory
• cp: copy a file or directory
• mv: move a file or directory
• rm: remove a file
• echo: print a message to the screen

Concepts

• relative path: a file or directory location relative to where we currently are in the file system
• absolute path: a file or directory location in relation to the root of the file system
• use Tab key to autocomplete paths
• the Linux command line does not have an undo feature - perform destructive actions carefully

References

https://ryanstutorials.net/linuxtutorial/
https://btholt.github.io/complete-intro-to-linux-and-the-cli/
https://swcarpentry.github.io/shell-novice/