Bash

External

• https://www.gnu.org/software/bash/manual/bashref.html
• File:Bash 4.4 Reference Manual.pdf

Installation

bash Installation

Subjects

• Concepts
• bash Command Line
• bash Parameters and Variables
• bash Patterns
• bash Built-In Variables
• Command Line Expansion
• Input/Output
• bash Configuration Files
• bash Expressions
• bash Arrays
• Numbers and Arithmetic in bash
• File Name Handling in bash
• bash Script Debugging
• Functions
• Command Substitution
• Process in Background
• Unit Testing for bash
• Handling Signals in bash
• bash Loops
• bash on Mac
• bash Prompt
• bash Time
• Calling Python from bash
• Shebang
• shellcheck

Built-In Commands

https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Bash-Builtins

set

for

printf

if

declare

typeset

type

read

shift test

eval

exec

trap

shopt

source

history

fc mapfile dirs/pushd/popd

Job-Control Builtins

fg

bg

jobs

kill

wait

disown

suspend

More about builtins:

Builtins

External Commands

tail

bash Script Library

• Processing of Command Line Parameters that Include Spaces
• Standard Command Line Option Processing Pattern
• Common bash functions (bash.shlib)
• Common Gradle wrapper functions (gradle.shlib)
• Common Maven wrapper functions (maven.shlib)
• Report the number of threads of a Java process
• Generate a random MAC address
• Timeout Loops
• Interactively Read Input from stdin
• Recommended pattern for boolean values in scripts
• Listing files in a directory and testing whether specific files exist in directories
• Determine whether a Variable Contains Spaces
• Trim
• String to Lower or Upper Case
• Self-Extracting Shell Script
• Return Multiple Values from a Function using an Associative Array
• Temporary files and directories in bash
• Handling Complex Commands as Strings
• Numbers and Arithmetic in bash