Linux Commands – Generating List of All Available Commands and Functions

autocompletebashcommandlinux

In Linux (I am using CentOS 7), there is a built in functionality to view all runnable commands. The command is run by pressing tab twice in the console followed by the prompt:

Display all 1130 possibilities? (y or n)

Pressing y outputs a huge list of commands to the console.

Is there a way to capture this output in a file?

Or is this list already stored locally? If so, how can I access this?

Best Answer

The solution I chose was to run the command:

$ compgen -A function -abck | sort -u >> cmds.txt

which appends all runnable commands, functions and aliases to a text file cmds.txt

Taken from: https://stackoverflow.com/questions/948008/linux-command-to-list-all-available-commands-and-aliases

Edit: added sort -u to command to remove duplicates as suggested by glenn jackman

Related Solutions

Bash – Make BASH’s Tab Completion Fill In First Match

Add the following to your .inputrc file, (exact location varies between systems):

"\C-i": menu-complete

This maps TAB to menu-complete, which auto-completes the first match.

Then add (or uncomment) show-all-if-ambiguous, this shows the list of possible completions on the first TAB press.

For example, in your (possibly) .inputrc file:

# On RHEL 8.3 - $HOME/.inputrc
set show-all-if-ambiguous on
"\C-i": menu-complete

Alternatively, you can set menu-complete per session (without editing .inputrc) by doing

bind '"\C-i" menu-complete'

ZSH takes two tabs to complete filenames

The setting I needed to fix was

zstyle '*' single-ignored show

in the completion.zsh file in oh-my-zsh. I changed it to

zstyle '*' single-ignored complete

Best Answer

Related Solutions

Bash – Make BASH’s Tab Completion Fill In First Match

ZSH takes two tabs to complete filenames

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