Shell Scripting Course Content :
1. UNIX Background

• Introduction about Operating System(OS)
• Introduction to UNIX
• List of UNIX vendors available in Market
• Introduction to various UNIX Implementation
• History of UNIX OS Evolution from 1969
• Open Source (vs.) Shared source (vs.) Closed source
• Is Unix Open Source software?

2. UNIX (vs.) LINUX

• LINUX OS background
• LINUX (vs.) WINDOWS
• Popular LINUX distributions/Vendors
• Similarities between Unix & Linux
• Differences between Unix & Linux
• About POSIX standards

3. UNIX System Architecture

• Hardware
• Kernel
• Shell
• Utilities and User programs
• Layers in Unix OS
• Unix Servers/Dumb terminals/nodes

4. UNIX System features

• Multitasking
• Multiuser
• Easy Portability
• Security
• Communication

5. UNIX day-to-day used commands

• System Information commands (uname, date, etc)
• man command
• User Related (w, who, etc)
• Terminal Related (stty, etc)
• Filter commands (more, less, etc)
• Miscellaneous commands (cal, banner, clear, etc)
• Viewing exit status of commands
• Disk Related commands

6. UNIX File System

• Introduction to Unix tree structure
• Inode representation
• Introduction to 3 types of files – Ordinary, Directory, Special
• 3 different ways of new file creation (touch, cat, vi)
• File system commands (ls, mkdir, cd, etc)
• Wild card characters
• File Permissions & security

7. Input/output Redirection and piping

• Introduction to Redirection/piping
• Output Redirection Example
• Input Redirection Example
• Error Redirection Example

8. UNIX Processes

• Introduction to Unix processes
• Program (vs.) Process
• System processes & commands
• User processes & commands
• Finding processes information using ‘grep’
• Background & foreground processing
• Kill signal
• Setting process priorities
• Avoiding hang-ups using ‘nohup’

9. Job Scheduling

• Introduction to job scheduling
• Run jobs at regular intervals using crontab
• Run jobs at specific intervals using ‘at’

10. UNIX communication

• On-line communication using write, wall, talk, etc
• Off-line communication using mail, news, etc

11. UNIX Environment Variables

• Introduction to ‘echo’ command
• System defined environment variables
• User defined environment variables
• Creating user defined environment variables.

12. Visual Editor

• Introduction to Visual Editor
• Understanding 3 basic modes of operations
• Cursor Movement commands
• Scrolling commands
• Editing text commands
• Copying and pasting text
• Shell commands
• Text Buffers
• Search commands

13. UNIX System files & Default User settings

• Introduction to system files (/etc/passwd)
• Creating user aliases ($HOME/.bashrc)
• Sourcing environment ($HOME/.bash_profile)
• Logout action file ($HOME/.bash_logout)

14. UNIX Shell Scripting

• Introduction to Shell
• Types of shells
• Evolution/History of various Unix shells
• Introduction to Shell scripting
• Difference between programming and scripting
• Steps in handling shell scripts
• Writing first shell script – “Hello World…!”

15. Shell Scripting basic examples

• Adding comments
• Displaying output to screen
• Variables declaration
• Arithmetic operations
• Read Input from command line
• Interactive Addition program
• Positional Parameters
• Command Line arguments
• Arithmetic operations using command line arguments
• Command line arguments using SHIFT operator
• Scope of Variables

16. Conditional Statements

• Sequence control structure (vs.) decision making structure
• If-then-fi statement
• If-then-else-fi statement
• If-then-elif-else-fi statement
• TEST command
• case – esac statement
• String operations
• Examples

17. Flow control statements

• For Loop
• While loop
• Until loop
• Loop nesting
• Break/continue commands
• Examples on For/While/Until
• For + ls example
• While + case example
• If + grep example
• For + sed + awk example

18. Compression & Archive commands

• Introduction to Archiving
• Introduction to Compression
• Archive (vs.) compression
• Creating archives
• Compressing & un-compressing files
• Compressed Archives

19. Miscellaneous, but useful topics

• Transferring files between Unix servers using FTP
• Remote login to another Unix server
• Starting and shutting down the servers
• Writing C programs in Unix OS
• Compiling and debugging C programs in Unix OS