Linux Command Line Essentials

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2 days practical workshop for up to 12 people.

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A 2 day introduction to the Linux command line environment for staff working with Linux servers and/or workstations. The course covers the Linux shell command line (Bash and Korn Shell), filename wildcards, I/O redirection, pipelines, filesystem structure, process environment, common filter commands, using X-Windows applications and customizing the login environment. The focus is on an improved understanding of the shell?s command line parsing mechanism, as well as familiarity with the most commonly used Linux utilities. Optionally this course can be customized by combining it with the companion course Linux Shell Scripting.


This course comprises a mix of theory, demonstrations and hands on exercises. Approximately 50% of the time is hands-on.

Training Course Objectives

  • Logging in and using the command line interface
  • Customizing the shell login environment ( Bash and Korn Shell)
  • Managing files and directories
  • Understanding the Linux process model including environment variables
  • Working effectively with wildcards and quotes
  • Building command lines using I/O redirection and pipelines
  • Familiarity with common filter commands
  • Understanding the capabilities of the command file editors
  • Using local and remote X-windows applications

Who it is for

This course is designed for staff with little or no prior experience of the Linux command line, but who do have basic familiarity with using a computer keyboard and mouse in a window based environment such as Microsoft Windows, Linux Desktop or Mac OS X.

Training Course Prerequisites

  • Some experience of working with a computer operating system.


Chapter 1 Getting started

  • Logging in
  • Command history
  • Command line format
  • The ls and ps commands
  • Manual pages and other sources of help

Chapter 2 Filesystem structure

  • The home directory and standard system directories
  • Relative and absolute paths
  • Paging files with less/more
  • Creating, renaming and deleting files and directories
  • Symbolic links

Chapter 3 Shell command line parsing

  • Meta characters
  • Filename generation
  • Quotes
  • Environment variables

Chapter 4 Common commands

  • Using filter commands such as cut
  • Examining files with file, od, wc, etc.
  • The grep command and regular expressions
  • The find command

Chapter 5 Editors

  • Using the vi family
  • Using emacs
  • Other editors such as pico/nano

Chapter 6 Login environment

  • The login profile
  • Customizing the prompt
  • Search PATH
  • Aliases

Chapter 7 Processes

  • Looking at processes
  • Background commands
  • Killing processes

Chapter 8 GUI Applications

  • X-Winodws architecture
  • The DISPLAY variable
  • GUI applications and editors
  • Mouse key shortcuts