1.What is a shell script 2.Why use shell scripts  Typical uses
3.History 4.Feature comparison   Core Similarities (and recap of basic command line usage)
  Principal Differences
5.Other scripting languages 6.ksh/bash vs sh 7.Basics  Exit status
8.Filename Wildcards 9.Variables   Setting and exporting variables
  Using variables
  Conditional modifiers
  Variable assignment command prefix
10.Preset Variables  Login environment
 Shell internal settings
 Process ID variables
 ksh/bash additional features
11.Arguments  Setting new positional arguments
12.Shell options 13.Command substitution   sh syntax
  ksh/bash syntax
14.I/O redirection and pipelines  Output redirection
 Input redirection
 Command pipelines
15.Input and output   Script output
  Script input
16.Conditional Tests   File tests
  Character string tests
17.Conditional Tests (contd.)   Arithmetic tests
  Additional tests for [[...]] (ksh and bash)
  Negating and Combining tests
18.Flow control   Conditional execution: if/else
  Looping: 'while' and 'for' loops
19.Flow control (contd.)   Case statement: pattern matching
  Miscellaneous flow control and subshells
20.Conditional test examples 21.Miscellaneous 22.Manipulating Variables  Text variables
 Numeric variables
23.Functions   Defining functions
  Calling functions.
  Reuseable functions
24.Advanced I/O   Redirecting for the whole script
  Explicitly opening or duplicating file descriptors
  Input and output to open file descriptors (ksh)
  Closing file handles
  
25.Wizard I/O   Pass stderr of a command into a pipeline for further processing
  Capture the exit status of a command in the middle of a pipeline
26.Coprocesses   ksh coprocesses
27.Arrays 28.Signals 29.Security 30.Style  When not to use shell scripts
31.Examples 32.Common external commands   Listing, copying and moving files and directories
  Displaying text, files or parts of files
  Compression and archiving
  Sorting and searching for patterns
  System information (users, processes, time)
  Conditional tests
  Stream Editing
  Finding and comparing files
  Arithmetic and String Manipulation
  Merging files
33.References   Books
  Online Resources
  Unix-like shells and utilities for Microsoft Windows