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Unix/Linux Fundamentals

The objective of this course is to provide a comprehensive introduction to the UNIX operating system.

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Learning Objectives

At the end of the course delegates will have the fundamental skills required to login to a Unix system, manage files and directories, use Unix commands and manage processes, use an editor, access the electronic mail facility and create simple shell scripts.

Pre-Requisites

Delegates should be computer literate and familiar with the basic usage of an operating system, although no prior knowledge of UNIX is required.

Course Content

Introduction to UNIX

  • History of Unix
  • Unix Features
  • Unix System V
  • Standards

Executing UNIX Commands

  • Logging in
  • The shell prompts
  • Unix Commands syntax
  • Arguments and options
  • Basic Unix commands
  • Terminal characteristics

Using Electronic Mail

  • Reading your mail
  • Sending mail
  • Saving mail
  • Replying and forwarding
  • Deleting mail messages

The UNIX Filesystem

  • File system structure
  • Directories and files
  • Important Unix directories
  • The Kernel
  • User's home directory
  • Naming convention

Accessing Files

  • Wildcards
  • Pathnames (Absolute & Relative)
  • Changing Directories
  • Listing files
  • File details
  • Sub-directories (making & removing)

Redirection

  • Standard input & output devices
  • redirecting output and appending output
  • Displaying contents of files

File Management

  • Copying files
  • Removing files
  • (interactively & recursively)
  • Moving files
  • Managing Multiple files
  • Removing directories

Permissions

  • Finding User
  • Group and other permissions
  • Read, Write and Execute permissions
  • Effect of permissions on files and directories
  • The unmask
  • Changing permissions on files and directories
  • Changing file ownership and group

Linking files

  • I-nodes
  • Hard links
  • Symbolic links

Printing

  • Formatting for printing
  • Sending files to the printer

Sorting the Contents of Files

  • ASCII
  • Normal Sort
  • Numeric Sort
  • Merging Sorted Files
  • Saving the Sorted Output
  • Sort Keys
  • Multiple Keys
  • Field Separators
  • Duplicated Records
  • Case Sensitivity

Other Unix File Utilities

  • Counting words
  • lines and characters
  • Looking at the start and end of files
  • File comparisons Creating ed scripts with diff
  • Suppressing duplicated output

Combining Unix Commands and Utilities

  • Piping standard output to new commands
  • Filtering standard output in a pipeline

Finding Files

  • The find command syntax
  • Defining search
  • Find actions
  • Executing commands on matched files

Finding patterns in files

  • Grep regular expressions
  • Special characters

The Unix editors

  • Invoking vi
  • Command and edit mode
  • Moving around
  • Undo
  • Deleting
  • Saving
  • Named buffers
  • The ed editor
  • Substitution
  • Global substitution.
  • Pattern searches
  • Changing text
  • Replacing text
  • Moving text
  • Copying and Pasting
  • Joining lines

Introduction to Bourne & Korn Shells

  • Different shells and features
  • Invoking a shell
  • The PATH
  • Quotation marks
  • Variables
  • Shell variables
  • Exporting variables
  • Environment variables
  • Process variables
  • User profiles.

Processes

  • Foreground processes
  • Background processes
  • Command priority
  • Process status
  • Killing processes

Shell Script Basics

  • Creating and executing a script
  • Script parameters

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