Introduction to Unix, History, Versions, Features. File Systems

Logging In, Password, Creating Files and Dir. Removing files and dir.

Additional commands (uname,  mv, date, ,ls options, finger, who, cal. Copying using

(absolute, relative) method, Wild characters, redirection ( ?, *, [ ] ), (stdin, stdout, stderr

File access permissions chmod (absolute, symbolic), umask. Simple filters (more,less, wc, sort, cut, paste, tr)

Editors – vi (advance) – 3 modes – escape, insert, colon

Searching files using find command by using various options, communications tools – using write, talk, mail, wall commands Advance filters (grep, sed, awk)

Linking files using hard link and short link, process scheduling – background process, killing process

Shell Programming – Introduction, Variable declaration, logical and relational, case

statements, loops and positional parameters, if condition

Introduction to Shell Scripting and its Usage

Regular Expressions, GREP Command

Sed Editor Tasks

The adv-awk programming language
Use awk commands from the command line
Write simple awk programs using &conditions

UNIX Shells and Shell scripts,                                                                                                     Describe the role/standards of shells in the UNIX environment,
Define the Components of a shell script & Write a simple shell script,intro

The Shell Environment
Assign/display values to shell variables
Make variables available to subprocesses using the export statement
Perform arithmetic operations & Create and use aliases. Define/display aliases

Writing and Debugging Scripts
Start a Script with #! & change permission on a script.Execute/debug a script

Conditionals
Use the exit status of command as conditional control
Pass values using command–line arguments (positional parameters) into a script
Create USAGE messages. Use conditional if, then, elif, else, and fi constructs & Use let, and test statements ([[ ]],” “). Use the case statement & Quoting (single, double, backslash, back quote)

Loops :Write scripts that use for, while and until loops & Write a script using the select statement

Interactive Scripts: Use the print and echo commands to display text. Use the read command to interactively assign data to a shell variable. Create a "here" document & Use file descriptors

Advanced Variables, Parameters, and Argument Lists
Declare strings, integers, and array variables & Manipulate string variables
Change the values of the positional parameters using the shift with in a script. Set default values for parameters

Functions ,Create user-defined functions in a shell script. Create, invoke, and display functions from the command line pass arguments into a function. Call function from (function) files, Traps Describe how the trap statement works,USe the trap statement to catch signals to perform Error-Handling

Dialog Utilities & Job Automation.