Course Overview

Linux Shell Scripting is designed to provide the skills necessary to automate tasks on a Unix or Linux system. Systems Administrators and Developers alike can avoid errors, save time and money by replacing repetitive work patterns with shell scripts. Care has been taken to present Linux Shell Scripting in a format that benefits all students, with or without previous programming experience. Guru Labs believes that the best way to learn shell scripting is writing shell scripts. For this reason, lab time is emphasized. Early labs present the scripting process step by step, while later labs are presented in a challenge format. While official solutions to each lab task are provided, students are encouraged to create their own before examining the solution. In this way, more experienced students are challenged without overwhelming the less experienced.

CLASS INFORMATION
Price: 
$1,200
Duration: 
2 days
Version: 
H01

  • Module 1: INTRODUCTION TO THE SHELL

    • Shell Script Strengths and Weaknesses
    • Shells
    • Switching User Contexts
    • Example Shell Script
    • Shell and Environment Variables
    • Key Environment Variables
    • Which and Type
    • General Quoting Rules
    • Nesting Commands
    • Help from Commands and Documentation
    • whereis
    • Getting Help Within the Graphical Desktop
    • Getting Help with man & info

    Module 2: SHELL SCRIPTING BASICS

    • Positional Parameters
    • Input & Output
    • printf
    • alias
    • Functions
    • Colors in Scripts
    • Custom Bash Prompts

    Module 3: WORKING WITH FILES

    • Communication Channels
    • File Redirection
    • Piping Commands Together
    • Doing Math
    • Filesystem Structures
    • Determining Disk Usage With df and du
    • cron
    • The crontab Command
    • crontab Format
    • /etc/cron.*/ Directories
    • Sending Email with mailx

    Module 4: REGULAR EXPRESSIONS

    • Searching Inside Files
    • Regular Expression Overview
    • Regular Expressions
    • RE Character Classes
    • Regex Quantifiers
    • RE Parenthesis
    • The Streaming Editor

    Module 5: BRANCHING AND LOOPING

    • Exit Status
    • Comparisons with test
    • Conditional Statements
    • Flow Control: case
    • Flow Control: while and until Loops
    • The for Loop
    • Flow Control: select

    Module 6: DATA MUNGING

    • Text Processing with Awk
    • Text Sorting
    • Duplicate Removal Utility
    • Extracting Columns of Text

    Module 7: SECURITY, WHITESPACE, AND OTHER GOTCHAS

    • Gotcha: Quoting Variables
    • Gotcha: Locales
    • Gotchas: Maximum Command Length
    • Gotcha: Whitespace in for Loops
    • Reading Files with while
    • Gotcha: $IFS
    • Gotcha: Printing in .bashrc
    • Gotcha: Aliases

    Module A: CHALLENGE

    • Apache Configuration Files
    • httpd.conf VirtualHost Configuration

    Module B: EMACS

    • Emacs
    • The Emacs Interface
    • Basic Emacs
    • More Emacs Commands

    Module C: THE SECURE SHELL (SSH)

    • ssh and sshd Configuration
    • Accessing Remote Shells
    • Transferring Files
    • SSH Key Management
    • Module 1 LAB TASKS
      • Shell Variables
      • Shell Meta-Characters
      • Command Substitution
    • Module 2 LAB TASKS
      • Aliases
      • Bash Login Scripts
      • Create “userinfo” and “sysinfo” functions
    • Module 3 LAB TASKS
      • Disk and Filesystem Usage
      • Redirection and Pipes
    • Module 4 LAB TASKS
      • Pattern Matching with Regular Expressions
      • Extended Regular Expressions
      • Using Regular Expressions With sed
    • Module 5 LAB TASKS
      • Reporting User Statistics
      • Monitoring Filesystem Usage
    • Module 6 LAB TASKS
      • Create “rmhost” function
      • Create “showenv” function
      • Parsing Mail Server Logs
      • Fixing Incorrect Files
    • Module 7 LAB TASKS
      • Renaming MP3 Files
      • Split and Display $PATH
      • A tar-based Backup
    • Module A LAB TASKS
      • Automated Virtual Host Provisioning
    • Module B LAB TASKS
      • Text Editing with Emacs

  • Solid understanding of Unix-based systems and proficiency on the Unix or Linux command line.