git-codeowners - A tool for managing CODEOWNERS files


version 0.49


    git-codeowners [--version|--help|--manual]

    git-codeowners [show] [--format FORMAT] [--owner OWNER]...
                   [--pattern PATTERN]... [--[no-]patterns]
                   [--project PROJECT]... [--[no-]projects] [PATH...]

    git-codeowners owners [--format FORMAT] [--pattern PATTERN]

    git-codeowners patterns [--format FORMAT] [--owner OWNER]

    git-codeowners create|update [REPO_DIRPATH|CODEOWNERS_FILEPATH]

    # enable bash shell completion
    eval "$(git-codeowners --shell-completion)"


git-codeowners is yet another CLI tool for managing CODEOWNERS files in git repos. In particular, it can be used to quickly find out who owns a particular file in a monorepo (or monolith).

THIS IS EXPERIMENTAL! The interface of this tool and its modules will probably change as I field test some things. Feedback welcome.


There are several ways to install git-codeowners to your system.

from CPAN

You can install git-codeowners using cpanm:

    cpanm App::Codeowners

from GitHub

You can also choose to download git-codeowners as a self-contained executable:

    curl -OL
    chmod +x git-codeowners

To hack on the code, clone the repo instead:

    git clone
    cd git-codeowners
    make bootstrap      # installs dependencies; requires cpanm



Print the program name and version to STDOUT, and exit.

Alias: -v


Print the synopsis to STDOUT, and exit.

Alias: -h

You can also use --manual to print the full documentation.


Enable colorized output.

Color is ON by default on terminals; use --no-color to disable. Some environment variables may also alter the behavior of colorizing output:

  • NO_COLOR - Set to disable color (same as --no-color).

  • COLOR_DEPTH - Set the number of supportable colors (e.g. 0, 16, 256, 16777216).


Specify the output format to use. See "FORMAT".

Alias: -f


    eval "$(git-codeowners --shell-completion)"

Print shell code to enable completion to STDOUT, and exit.

Does not yet support Zsh...



    git-codeowners [show] [--format FORMAT] [--owner OWNER]...
                   [--pattern PATTERN]... [--[no-]patterns]
                   [--project PROJECT]... [--[no-]projects] [PATH...]

Show owners of one or more files in a repo.

If --owner, --project, --pattern are set, only show files with matching criteria. These can be repeated.

Use --patterns to also show the matching pattern associated with each file.

By default the output might show associated projects if the CODEOWNERS file defines them. You can control this by explicitly using --projects or --no-projects to always show or always hide defined projects, respectively.


    git-codeowners owners [--format FORMAT] [--pattern PATTERN]

List all owners defined in the CODEOWNERS file.


    git-codeowners patterns [--format FORMAT] [--owner OWNER]

List all patterns defined in the CODEOWNERS file.


    git-codeowners create [REPO_DIRPATH|CODEOWNERS_FILEPATH]

Create a new CODEOWNERS file for a specified repo (or current directory).


    git-codeowners update [REPO_DIRPATH|CODEOWNERS_FILEPATH]

Update the "unowned" list of an existing CODEOWNERS file for a specified repo (or current directory).


The --format argument can be one of:

Format string

You can specify a custom format using printf-like format sequences. These are the items that can be substituted:

  • %F - Filename

  • %O - Owner or owners

  • %P - Project

  • %T - Pattern

  • %n - newline

  • %t - tab

  • %% - percent sign

The syntax also allows padding and some filters. Examples:

    git-codeowners show -f ' * %-50F %O'                # default for "show"
    git-codeowners show -f '%{quote}F,%{quote}O'        # ad hoc CSV
    git-codeowners patterns -f '--> %{color:0c0}T'      # whatever...

Available filters:

  • quote - Quote the replacement string.

  • color:FFFFFF - Colorize the replacement string (if color is ON).

  • nocolor - Do not colorize replacement string.

Format table

Table formatting can be done by one of several different modules, each with its own features and bugs. The default module is Text::Table::Tiny, but this can be overridden using the PERL_TEXT_TABLE environment variable if desired, like this:

    PERL_TEXT_TABLE=Text::Table::HTML git-codeowners -f table

The list of available modules is at "@BACKENDS" in Text::Table::Any.


  • Some commands require git (at least version 1.8.5).


Please report any bugs or feature requests on the bugtracker website

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.


Charles McGarvey <>


This software is copyright (c) 2019 by Charles McGarvey.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.