48-What is Bash Completion? | Linux Tutorial | Linux Commands | Linux for Beginners

What is Bash Completion. How to use bash completion (tab completion) feature in Linux.

Bash completion is a feature of the Bash shell in Linux that allows you to auto-complete commands and filenames as you type them in the terminal. It helps save time and avoid typing errors, especially when working with long or complex commands or filenames. Here are the steps to use the bash completion (tab completion) feature in Linux:

Enable Bash Completion: Depending on your Linux distribution, bash completion may already be enabled by default.

Tab Completion for Commands: To use tab completion for commands, start typing a command and press the Tab key. Bash will automatically try to complete the command based on the characters you have typed. If there are multiple possible completions, you can press Tab again to cycle through them.

Tab Completion for Filenames: To use tab completion for filenames, start typing the name of a file or directory and press the Tab key. Bash will try to complete the name based on the files and directories in the current directory. If there are multiple possible completions, you can press Tab again to cycle through them.

Partial Filename Completion: If you only remember part of a filename, you can use partial filename completion by typing the part you remember and pressing the Tab key twice. Bash will display a list of possible completions.

Bash Completion for Options: Many Linux commands have options that can be specified using flags, such as "-h" for help or "-v" for verbose output. To use bash completion for options, type the command followed by a space and then press the Tab key twice. Bash will display a list of available options.

By following these steps, you can use the bash completion (tab completion) feature in Linux to save time and avoid typing errors while working in the terminal.

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