Web Reference: Mar 22, 2018 · Bash completion is a functionality through which Bash helps users type their commands more quickly and easily. It does this by presenting possible options when users press the Tab key while typing a command. There is some support for dynamically modifying completions. This is most useful when used in combination with a default completion specified with -D. It’s possible for shell functions executed as completion functions to indicate that completion should be retried by returning an exit status of 124. This guide delves into mastering Bash completions, showcasing how to enhance command-line efficiency by writing and customizing bash completion scripts. It covers the basics, installation on various Linux distributions, and steps for enabling the feature.
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