E-learning module "Linux Basics"

Introduction

Everything is a file in Linux:
  • Data and directory files (obvious!)
  • But also, for example,
    • Network connections
    • Hardware (/dev directory)

File names can have max. 256 characters (and require no extension for the file type).

Linux is case sensitive; filename is not the same as Filename!

 
 

File names can consist of (selection only)
  • upper case
  • and lower case characters,
  • numbers,
  • dash, underscore, dot.
Special characters which cannot be part of a file name are (only a selection):
  • /                       → path seperator
  • ?                       → wildcard for a single character
  • *                       → wildcard for multiple characters
  • [ ]                   → a character in the brackets can be replaced
  • [A–Z]               → range to be replaced
  • \                       → backslash is the escape character for special characters
  • < , >                → redirect in- and output
  • |,|| , ; , && → concatinate commands
  • ( , )                → grouping of commands
  • " , ' , `         → quotes

The content of this e-learning module is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Germany license (CC BY-NC-SA 3.0 DE).



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