Linux Shell Scripting

1. INTRODUCTION TO THE SHELL
1. Shell Script Strengths and Weaknesses
2. Shells
3. Switching User Contexts
4. Example Shell Script
5. Shell and Environment Variables
6. Key Environment Variables
7. Which and Type
8. General Quoting Rules
9. Nesting Commands
10. Help from Commands and Documentation
11. whereis
12. Getting Help Within the Graphical Desktop
13. Getting Help with man & info

LAB TASKS
14. Shell Variables
15. Shell Meta-Characters
16. Command Substitution
2. SHELL SCRIPTING BASICS
1. Positional Parameters
2. Input & Output
3. printf
4. alias
5. Functions
6. Colors in Scripts
7. Custom Bash Prompts

LAB TASKS
8. Aliases
9. Bash Login Scripts
10. Create "userinfo" and "sysinfo" functions

3. WORKING WITH FILES
1. Communication Channels
2. File Redirection
3. Piping Commands Together
4. Doing Math
5. Filesystem Structures
6. Determining Disk Usage With df and du
7. cron
8. The crontab Command
9. crontab Format
10. /etc/cron.*/ Directories
11. Sending Email with mailx

LAB TASKS
12. Disk and Filesystem Usage
13. Redirection and Pipes
4. REGULAR EXPRESSIONS
1. Searching Inside Files
2. Regular Expression Overview
3. Regular Expressions
4. RE Character Classes
5. Regex Quantifiers
6. RE Parenthesis
7. The Streaming Editor

LAB TASKS
8. Pattern Matching with Regular Expressions
9. Extended Regular Expressions
10. Using Regular Expressions With sed
5. BRANCHING AND LOOPING
1. Exit Status
2. Comparisons with test
3. Conditional Statements
4. Flow Control: case
5. Flow Control: while and until Loops
6. The borne for-Loop
7. Flow Control: select

LAB TASKS
8. Reporting User Statistics
9. Monitoring Filesystem Usage
6. DATA MUNGING
1. Text Processing with Awk
2. Text Sorting
3. Duplicate Removal Utility
4. Extracting Columns of Text

LAB TASKS
5. Create "rmhost" function
6. Create "showenv" function
7. Parsing Mail Server Logs
8. Fixing Incorrect Files

7. SECURITY, WHITESPACE, AND OTHER GOTCHAS
1. Gotcha: Quoting Variables
2. Gotcha: Locales
3. Gotchas: Maximum Command Length
4. Gotcha: Whitespace in for Loops
5. Reading Files with while
6. Gotcha: $IFS
7. Gotcha: Printing in .bashrc
8. Gotcha: Aliases

LAB TASKS
9. Renaming MP3 Files
10. Split and Display $PATH
11. A tar-based Backup
A. CHALLENGE
1. Apache Configuration Files
2. httpd.conf – VirtualHost Configuration

LAB TASKS
3. Automated Virtual Host Provisioning
B. EMACS
1. Emacs
2. The Emacs Interface
3. Basic Emacs
4. More Emacs Commands

LAB TASKS
5. Text Editing with Emacs
C. THE SECURE SHELL (SSH)
1. OpenSSH Client & Server Configuration
2. Accessing Remote Shells
3. Transferring Files
4. SSH Key Management