Linux terminal 快捷键组合

• Command-line editing, allowing you to use vi- or emacs-style editing commands on your command lines.
• Key bindings that allow you to set up customized editing key sequences.
• Integrated programming features: the functionality of several external UNIX
commands, including test, expr, getopt, and echo, has been integrated into the
shell itself, enabling common programming tasks to be done more cleanly and
efficiently.
• Control structures, especially the select construct, which enables easy menu
generation.
• New options and variables that give you more ways to customize your environment.
• One dimensional arrays that allow easy referencing and manipulation of lists of data.
• Dynamic loading of built-ins, plus the ability to write your own and load them
into the running shell.