Bash

https://en.wikipedia.org/wiki/Bash_(Unix_shell) (1989) Unix shell

• macOS installation: brew install bash

• Bash history
• alias
• function { }
• && and || operator
• #! (shebang (Unix))
• for, while and until. See also: Use loops in task (Ansible)
• source and . for includes
• set
• Autocompletion
• /lib/lsb/init-functions
• exit , return and $?
• .bashrc, .bash_profile
• Bash builtin functions: complete, shift, disown
• Brace expansion
• Ctrl+z + bg
• Variable: PS1, PATH
• Arrays https://kb.novaordis.com/index.php/Bash_Arrays
• shopt
• trap
• eval
• dirname
• Bash -c
• bash --login

Activities

1. Read What is the difference between .bash_profile and .bashrc?, https://apple.stackexchange.com/a/51038
2. Read https://j.ludost.net/blog/archives/2019/12/09/shell_wildcards_considered_dangerous/index.html
3. Read https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html

Related terms

• sed, awk
• variable
• readlink
• Windows Subsystem for Linux (WLS)
• fzf
• pushd, popd
• space in Bash commands

See also

• Bash [ -c ], alias, &&, Bash history, Autocompletion, set, unset, export, .bash_aliases, .bashrc and .bash profile, PS1, echo, brace expansion, Function, shopt, trap, set -e, source, PATH, complete, disown, .hushlogin, .bashrc, builtin, eval, set, $PATH, $HOME, TZ, .profile, -e, -i, Builtin (Bash), mapfile, ~, return (Bash), for, until, declare, dirname, basename, functions.sh, Bash arithmetic expansion, shift, bash --rcfile, readonly, $1, $@
• Shell: Fish shell, sh, Bash, ksh, zsh, ash, PowerShell (Windows), /usr/bin/env, .hushlogin, dash, tcsh, Shell redirection,dquote, $SHELL, Google Cloud Shell, AWS CloudShell, explainshell.com, vmware_vm_shell, Nushell, Fig.io, direnv

https://stackoverflow.com/questions/4419952/difference-between-return-and-exit-in-bash-functions

https://apple.stackexchange.com/a/51038

https://www.cyberciti.biz/faq/explain-brace-expansion-in-cp-mv-bash-shell-commands/