Bash, Zsh, sh, tcsh, and the TUI tools built on top of them — prompts, scripting, multiplexers, and terminal troubleshooting.
Running multiple shell sessions inside one terminal window, splitting panes, and, most importantly, keeping sessions alive across disconnects.
Setting up a terminal-based file manager for navigating, previewing, and manipulating files entirely with the keyboard, without leaving the terminal.
Installing and configuring a full-screen terminal system monitor for real-time CPU, memory, and process information, entirely keyboard-driven.
Setting up Windows Terminal specifically for a smooth WSL experience: default profile, font, and the settings that most commonly need adjusting.
Installing Zsh as your shell, setting up Oh My Zsh, and configuring a theme and a first useful plugin, from a default shell to a productive one.
Ctrl-Z, bg, fg, and a trailing & all touch one mechanism: process groups and Unix signals deciding which process can read your terminal.
Announced by maintainer Chet Ramey on February 20, 2009, Bash 4.0 added key-value associative arrays and other features scripters had requested for years.
Released as beta version .99 on June 8, 1989, Bash was built for the GNU Project as a free replacement for the Bourne shell and other proprietary Unix shells.
Distributed starting with 2BSD in 1979, Bill Joy's C shell introduced command history and aliases — features nearly every shell released since has copied.
Released February 13, 2005 by Swedish developer Axel Liljencrantz, Fish chose sensible-by-default behavior and built-in syntax highlighting over POSIX compatibility.