Course Code: 5585

Linux Shell Scripting

Class Dates:
12/6/2018
Length:
2 Days
Cost:
$995.00
Class Time:
Technology:
Desktop
Delivery:

Overview

  • Course Overview
  • The GL375 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 the GL375 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. Current Version: H01

  • Audience

Prerequisites

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

    Supported Distributions:

    Red Hat Enterprise Linux 7
    SUSE Linux Enterprise 12

  • Recommended Courses:

Course Details

  • 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
  • LABS
  • 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
  • Lab
  • DATA MUNGING
  • Text Processing with Awk
  • Text Sorting
  • Duplicate Removal Utility
  • Extracting Columns of Text
  • LABS
  • 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
  • LABS
  • A. CHALLENGE
  • Apache Configuration Files
  • httpd.conf VirtualHost Configuration
  • LABS
  • B. EMACS
  • Emacs
  • The Emacs Interface
  • Basic Emacs
  • More Emacs Commands
  • LABS
  • Text Editing with Emacs
  • C. THE SECURE SHELL (SSH)
  • ssh and sshd Configuration
  • Accessing Remote Shells
  • Transferring Files
  • SSH Key Management