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Operating System Shellλ︎

a shell is a computer program that exposes an operating system's services to a human user or other programs. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation. It is named a shell because it is the outermost layer around the operating system.[1][2]

Command-line shells require the user to be familiar with commands and their calling syntax, and to understand concepts about the shell-specific scripting language (for example, bash), while graphical shells place a low burden on beginning computer users and are characterized as being easy to use, yet most GUI-enabled operating systems also provide CLI shells, normally for performing advanced tasks.

Wikipedia: Shell - Computing

Command Line Shellλ︎

  • bash
  • zsh


Define aliases to optomise commands and create useful default flags when calling commands

Use a shell-aliases file to define aliases to be used with any command line shell.

Shell Aliases

# Shell aliases shared across all shells (zsh, bash)

# Neovim Aliases for multiple configurations
alias astro="NVIM_APPNAME=astronvim nvim"

# Neovide alias with AstroNvim configuration
alias neovide="NVIM_APPNAME=astronvim neovide"

# Shell history
# edit entire history
alias edit-shell-history="fc -W; astro \"$HISTFILE\"; fc -R"

# edit previous command in history
alias edit-last-command="fc -e astro -1"

Source the shell aliases from the shell configuration files

Source Shell Aliases for Zsh

# Source Shell Aliases
[[ ! -f ~/.config/shell-aliases ]] || source ~/.config/shell-aliases

Source Shell Aliases for bash

# Source Shell Aliases
if [ -f $HOME/.config/shell-aliases ]; then
    source $HOME/.config/shell-aliases 

GUI Shellλ︎

Gnome, KDE, Regolith are examples of desktop shells.