Shell Command Language

• Shell Introduction
• Quoting
  • Escape Character (Backslash)
  • Single-Quotes
  • Double-Quotes
• Token Recognition
  • Alias Substitution
• Reserved Words
• Parameters and Variables
  • Positional Parameters
  • Special Parameters
  • Shell Variables
• Word Expansions
  • Tilde Expansion
  • Parameter Expansion
  • Command Substitution
  • Arithmetic Expansion
  • Field Splitting
  • Pathname Expansion
  • Quote Removal
• Redirection
  • Redirecting Input
  • Redirecting Output
  • Appending Redirected Output
  • Here-Document
  • Duplicating an Input File Descriptor
  • Duplicating an Output File Descriptor
  • Open File Descriptors for Reading and Writing
• Exit Status and Errors
  • Consequences of Shell Errors
  • Exit Status for Commands
• Shell Commands
  • Simple Commands
  • Pipelines
  • Lists
  • Compound Commands
  • Function Definition Command
• Shell Grammar
  • Shell Grammar Lexical Conventions
  • Shell Grammar Rules
• Signals and Error Handling
• Shell Execution Environment
• Pattern Matching Notation
  • Patterns Matching a Single Character
  • Patterns Matching Multiple Characters
  • Patterns Used for Filename Expansion
• Special Built-In Utilities