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  • What is shell scripting?
  • Importance of shell scripting
  • Different types of shells
  • Creating shell script
  • Making shell scripting executable
  • Shell input & output
  • echo, print, read
Backslash character constants Variables
  • What is variable
  • System defined variables
  • Environment files
  • User defined variables
  • Constant variables
  • Local & global variables
  • Special variables
Operators
  • Arithmetic variables
  • Relational numeric operators
  • Logical operators
  • Assignment operators
Conditional statements
  • if, if….else
  • if, elif
  • case
Looping
  • while, until, for
  • break, continue

File test commands

String test commands

exit & sleep commands

Command line arguments

  • Usage of COA
  • What is $0, S#, $*, $@, $? , $$
Job scheduling
  • cron
  • at
  • batch
Compiling and execution of C and C++ programs
Unix-Shell Scripting
  • History of UNIX
  • Features of UNIX
  • Flavors of UNIX
  • Comparison of UNIX with Windows
  • Architecture of UNIX
  • UNIX File System
Different types of Files
  • Regular Files
  • Directory Files
  • Device Files
Basic Commands
  • pwd, logname, who, finger
  • Exit, date, cal
Creating Users & Groups
  • groupadd, groupdel
  • useradd, userdel
System startup & Shutdown
  • Init, halt, shutdown
  • Different Run levels
  • Different date formats
Working with files
  • cat, touch, rm
  • cp, mv
Working with Directories
  • mkdir, cd, rmdir, rm –r
Standard Input & Output
  • Redirecting output
  • Redirecting Input
Comparing Files
  • cmp, diff, comm
Searching files
  • find, locate, which
Zip files
  • gzip, gunzip
Displaying files
  • ls, ls options 
Viewing long files
  • pg, more, head, tail 
File Permissions
  • chmod, chown, chgrp, umask
Meta/Wild Card-characters
  • Class, Anchors
  • Repetition, Alteration
  • Group, Dot
Regular Expressions & Patterns
  • What is pattern
  • Usage of regular expression
  • Different types of pattern
  • Character pattern
  • Word pattern
  • Line pattern
Tools for Filters
  • grep, grep with options
  • Flat files
  • What are delimiters and its types?
  • Reading and Writing to files
Tools for column data
  • cut, paste
Tools for sorting
  • Sort by lines, Sort by fields
  • Sort with options, uniq
Changing information in files
  • tr, sed
Piping
  • usage of piping
  • piping with filters
  • tee command
Communication Tools
  • write, wall
  • mail, mail with options
Networking protocols
  • telnet, ftp
Disk status
  • du, df with options
Job control
  • Foreground jobs, background jobs
  • Killing jobs, nohup
Process status
  • ps , ps with options
Editor Vi
  • 3 modes
  • Command mode
  • Insert mode
  • Ex command mode

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