compgen

Bash built-in command for generating possible completion matches in Bash. Usually used within custom completion functions. See also: complete, compopt. More information: https://www.gnu.org/software/bash/manual/bash.html#index-compgen.

List all shell built-ins, aliases, functions and executables that you could run:

compgen -c

List all commands that you could run that start with a specified string and save results to COMPREPLY:

compgen -V COMPREPLY -c {{str}}

Match against a wordlist:

compgen -W "{{apple orange banana}}" {{a}}

List all aliases:

compgen -a

List all functions that you could run:

compgen -A function

Show shell reserved keywords:

compgen -k

See all available commands/aliases starting with ls:

compgen -ac {{ls}}

List all users on the system:

compgen -u

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compgen

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