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Unix Shell

Introduction

  • The UNIX Shell The Bourne
  • Korn & C Shells UNIX Shell Scripts

Review

  • Commands, ls
  • Redirection, Pipes, Find, Grep, Sort

UNIX Shell Features

  • Invoking a Shell
  • Command line expansion
  • Command Arguments
  • Meta-characters
  • Quotation marks
  • Redirection
  • File descriptors
  • Here documents, Redirection, Pipes, Tee
  • Defining Exporting and Environment variables
  • Command grouping
  • Conditional execution

Basic Shell Scripts

  • Positional and Automatic Parameters Set
  • Reading input
  • Writing to standard output
  • Display attributes
  • Interactive Shell scripts

Bourne & Korn Shell Programming

  • If statement
  • While statement
  • Case statement
  • Test command
  • For statement
  • Break statement
  • Continue statement
  • Tests on numeric values
  • String comparisons
  • Command exit status
  • Logical operators
  • Error handling
  • Arithmetic

Korn Shell Extensions

  • Extensions
  • Command substitution
  • Arithmetic expressions
  • Valid arithmetic operators
  • Variable attributes
  • Typeset, Built-in variables
  • Select command