UNIX Training in Chennai

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UNIX Training in Chennai Course Content

Introduction to the Unix Operating System

• A brief history of Unix
• The Unix kernel
• The UNIX file system
• Getting started navigating the file system
• The file system structure
• Directories and files
• Pathnames
• Navigating the file system
• Exercise: Logging on to the system
• Exercise: Navigating the file system

Basic Commands

• Command line syntax
• Basic file handling commands
• Directory handling commands
• Filename wildcard characters
• Exercise: Manipulating files and directories

Redirection and Pipes

• Input redirection
• Output redirection
• Pipes
• Exercise: Using redirection and pipe facilities

Introduction to The vi Editor

• Overview of the vi editor
• Basic functions
• Switching to input mode
• Other useful commands
• Exercises: Using the vi editor
• Exercise: Using more advanced vi features

Searching and Replacing Text

• Replacing text
• Using the vi editor
• Using sed for search and replace
• Searching for text with grep
• Linking files
• Exercises: Searching and Replacing Text

Recalling and Editing Commands

• Overview
• The bash shell
• The korn shell
• Exercises: Recall and Edit Commands

File Permissions and Access Control

• Users and user groups
• File access permissions
• Changing file attributes
• Switching users and user groups
• Linking files
• Exercise: Setting and access permissions

Processes

• What is a process?
• Monitoring processes
• Killing processes
• Background processes
• Job Control
• Grouping commands
• Exercise: Monitoring and controlling processes

More Basic Commands

• The wc (word count) command
• The find command
• The cut command
• The sort command
• The finger command
• Exercise: Using file handling commands

The User Environment

• Customising the .profile or .bash_profile
• Customising the .kshrc or .bashrc
• Exercise: Setting up an environment

UNIX Shell Scripting Training in Chennai Course Content

Unix Command Review

• Basic Unix commands
• General commands
• File and directory handling commands
• Filename generation characters
• I/O Redirection features
• Other commands

Getting Started

• What is a shell script?
• Development guidelines
• Creating and editing shell scripts
• Naming and storing shell scripts
• Executing shell scripts
• Exercise: Write a simple shell script

Using Variables

• Environment variables
• Local variables
• Assigning values to variables
• Assessing variable values
• Using quotes
• Delimiting variable names
• Echo control sequences
• Exercise: Add variables to a script

Integer Arithmetic

• Using the expr command
• Using the (( )) notation
• Exercise: Add integer arithmetic to a shell script

Handling Run Time Data

• The read command
• Command line arguments
• Exercise: Writing a generic shell script
• Exercise: Writing an interactive shell script

Condition Execution

• The if statement
• The test command
• Other test notations
• Default and substitute variables
• Exit status codes
• Exercise: Adding validation to previous scripts

Loop Constructs

• The while loop
• The until loop
• The for loop
• The while true and until false loops
• Loop control commands
• Exercise: Enhancing the previously written scripts
• Exercise: Writing a guess-the-number game

Multi-Branch Decisions

• The case statement
• Menu driven applications
• Exercise: Developing and writing a menu system

Functions

• What is a function?
• Syntax
• Examples
• Exercise: Add a function to a script

Interrupt Handling

• Interrupt signals
• Trapping interrupts
• Exercise: Adding traps to the menu script

Additional Features and Facilities

• The exec commands
• The includes notation
• More about loops
• Arrays
• Here Documents
• Exercise: Create a here script

Redirection, Pipes and Filters

• Standard I/O and redirection
• Pipes
• Command separation
• Conditional execution
• Grouping Commands
• UNIX filters
• The tee command

Backup and Restore Utilities

• Archive devices
• The cpio command
• The tar command
• The dd command

Background Job Scheduling

• Starting background jobs
• Background tasks and the nohup command
• Process priorities and the nice command
• Job control
• Scheduling jobs with the at command
• Scheduling jobs with the cron command

Regular Expression Notation

• Regular expressions
• Extended regular expressions

Searching Files for Patterns

• The grep family of commands
• The grep command
• The fgrep command
• The egrep command

The Stream Editor - sed

• Introduction and command line syntax
• The sed program structure
• sed program processing
• Use sed commands
• sed addresses
• sed instructions
• Hold and get functions
• Advanced flow control

Commands for Comparing Files

• Compare two files with the cmp command
• Compare two files with the comm command
• Compare two files with the diff and sdiff commands
• Compare large files with the bdiff command

File Manipulation Commands

• The file command
• The head command
• The tail command
• The cut command
• The paste command
• The pr command
• The split and csplit commands

Identify and Translate Characters

• od - octal dump
• Use cat to display non-printing characters
• The expand and unexpand commands
• The tr command

Sorting Files

• The sort command
• Specify sort keys with -k
• Sort by column positions
• The uniq command

Introduction to the Pattern Scanning Utility - awk

• Introduction and command line syntax
• The awk program structure
• Use regular expressions
• Operators
• Simple patterns
• Extended patterns
• Comments
• Special patterns (BEGIN and END)
• Program variables
• Built-in variables
• User defined variables
• Mathematical operators
• Enhanced printing
• Handling user variables

awk Program Control Structures

• Program control structures
• The if construct
• The while and do ... while constructs
• The basic for construct
• Associative array handling
• Functions
• Built in functions
• The system function
• The getline function
• User defined functions