Shell Command Language

1. Shell Introduction
2. Quoting
   1. Escape Character (Backslash)
   2. Single-Quotes
   3. Double-Quotes
3. Token Recognition
   1. Alias Substitution
4. Reserved Words
5. Parameters and Variables
   1. Positional Parameters
   2. Special Parameters
   3. Shell Variables
6. Word Expansions
   1. Tilde Expansion
   2. Parameter Expansion
   3. Command Substitution
   4. Arithmetic Expansion
   5. Field Splitting
   6. Pathname Expansion
   7. Quote Removal
7. Redirection
   1. Redirecting Input
   2. Redirecting Output
   3. Appending Redirected Output
   4. Here-Document
   5. Duplicating an Input File Descriptor
   6. Duplicating an Output File Descriptor
   7. Open File Descriptors for Reading and Writing
8. Exit Status and Errors
   1. Consequences of Shell Errors
   2. Exit Status for Commands
9. Shell Commands
   1. Simple Commands
   2. Pipelines
   3. Lists
   4. Compound Commands
   5. Function Definition Command
10. Shell Grammar
    1. Shell Grammar Lexical Conventions
    2. Shell Grammar Rules
11. Signals and Error Handling
12. Shell Execution Environment
13. Pattern Matching Notation
    1. Patterns Matching a Single Character
    2. Patterns Matching Multiple Characters
    3. Patterns Used for Filename Expansion
14. Special Built-In Utilities
    • break
    • colon
    • continue
    • dot
    • eval
    • exec
    • exit
    • export
    • readonly
    • return
    • set
    • shift
    • times
    • trap
    • unset