tab

Tab is a command line tool that is commonly used for auto-completion in various Unix-like operating systems. It helps users navigate and interact with the command line interface more efficiently. When a user starts typing a command or file name, tab can automatically complete it by suggesting possible matches. It speeds up the typing process and minimizes errors.

Additionally, tab can display a list of available options or arguments for a given command. By pressing the tab key twice after typing a command or an option, tab will provide a menu of all possible completions, saving the user from having to remember or look up all available choices.

Tab can also be configured to support completion for custom commands or aliases. This allows users to define their own auto-completions for specific tasks or applications.

Furthermore, tab offers various customization options, allowing users to personalize the auto-completion behavior according to their preferences. It supports tab width adjustment, casing options, and integration with different shells.

Tab is widely supported across many popular shells, including Bash, Zsh, and Fish. It is an essential tool for both beginner and experienced command line users, as it helps improve productivity and reduce typing effort.