Hacking Networked Solutions library for Bash

Abstract

The GNU Project's Bourne Again Shell (BASH)◳ is the standard shell supplied with the vast majority of Linux systems, the default shell provided with Mac OS X and Darwin and is even available for Microsoft Windows. Whilst the Bash shell offers an extremely portable and feature rich environment for rapidly developing basic applications and utilities its syntax is often hard to parse visually and some features are buried beneath a mountain of complexity.

The Hacking Networked Solutions library for Bash provides a range of functions designed to simplify the task of writing Bash scripts. Functionality currently includes Array Manipulation Functions, Error Handling and Debugging Functions and Variable Testing Functions.

Contents

• Preparing the ground
  • Installing the Hacking Networked Solutions library for Bash
    • Installing the overlay
    • Installing the package
• Array Manipulation Functions
  • get_next_array_index
    • Function description
    • Function parameters
    • Function output
    • Example use
• Error Handling and Debugging Functions
  • debug_echo
    • Function description
    • Function parameters
    • Global variables
    • Example use
  • debug_echo_array
    • Function description
    • Function parameters
    • Global variables
    • Example use
  • debug_function_enter / debug_function_return
    • Function description
    • Function parameters
    • Global variables
    • Example use
• Variable Testing Functions
  • is_defined
    • Function description
    • Function parameters
    • Return value
    • Example use
  • is_defined_and_set
    • Function description
    • Function parameters
    • Return value
    • Example use
  • is_undefined
    • Function description
    • Function parameters
    • Return value
    • Example use
  • is_undefined_or_unset
    • Function description
    • Function parameters
    • Return value
    • Example use