Contributing

Contributions are most welcome! All tldr pages are stored in Markdown right here on GitHub. Just open an issue or send a pull request and we'll incorporate it as soon as possible. To get started, sign the Contributor License Agreement.

Note: when submitting a new command, don't forget to check if there's already a pull request in progress for it.

Guidelines

The basic format of a tldr page is a set of concrete usage examples. Here are a few guidelines to get started:

Focus on the 5 or 6 most common usages. It's OK if the page doesn't cover everything; that's what man is for.
When in doubt, keep new command-line users in mind. Err on the side of clarity rather than terseness.
Try to incorporate the spelled-out version of single-letter options in the example's description. The goal is to allow people to understand the syntax of the commands, not just memorize it.
Introduce options gradually, starting with the simplest commands and using more complex examples progressively.
Use short but descriptive values for the tokens, ex. {{source_file}} or {{wallet.txt}}.
Focus on details specific to the command, and avoid explaining general UNIX concepts that could apply to any command (ex: relative/absolute paths, glob patterns/wildcards, special character escaping...).

The best way to be consistent is to have a look at a few existing pages :).

Markdown format

The format of each page should match the following:

# command-name

> Short, snappy description.
> Preferably one line; two are acceptable if necessary.

- Example description:

`command -opt1 -opt2 -arg1 {{arg_value}}`

- Example description:

`command -opt1 -opt2`

We actually have a linter/formatter that enforces our format. It is run automatically on every pull request, but you may install it to test your contributions locally before submitting them:

npm install tldr-lint
tldrl -f {{page.md}}

For other ways to use tldrl, such as linting an entire directory, check out (what else!) tldr tldrl

Token syntax

User-provided values should use the {{token}} syntax in order to allow clients to highlight them. Use snake_case for multi-word tokens.

Keep the following guidelines in mind when choosing token names:

If the example is clearer with an actual value rather than a generic placeholder, use the actual value. For example, use iostat {{2}} rather than iostat {{interval_in_secs}}.
For any reference to paths to files or folders, use {{path/to/<placeholder>}}. For example, ln -s {{path/to/file}} {{path/to/symlink}}. In case of a possible reference both to a file or a folder, use {{path/to/file_or_folder}}
If a command expects the file to have a particular extension, use it. For example, unrar x {{compressed.rar}}. In case needs a generic extension, use {{.ext}}, but only if it helps to clarify the command. For example, here:
```
Open all the files of a given extension in the current directory with the associated application:
open {{*.ext}}
```
... using {{.ext}} helps to clarify the command. But in a command like wc -l {{file}}, using {{file}} is sufficiently clear.
Lastly, follow the {{path/to/<placeholder>}} convention when there is a path-related command. Not when the file location is implicit. But of course, use proper judgement, keeping simplicity and user friendliness as the top priority.

In short, make it as intuitive as possible for the user to figure out how to use the command and fill it in with values.

Submitting a pull request

For submitting changes, you can use whatever workflow you're more comfortable with.

Using Github's web interface

The easiest way to submit a change is to just edit the page directly on the Github interface. Check out the step-by-step instructions (with screenshots) on Github Help.

Using the command line

Alternatively, you can do most of the process using the command line:

fork the repository on the github web interface
clone your fork locally:
git clone https://github.com/{{your_username}}/tldr.git && cd tldr
create a feature branch, e.g. named after the command you plan to edit:
git checkout -b {{branch_name}}
make your changes (edit existing files or create a new one)
commit the changes:
git commit --all -m "{{commit_message}}"
push to your fork:
git push
go to the github page for your fork and click the green pull request button.

Please send only related changes in the same pull request. Typically a pull request will include changes in a single file.

Commit message

For the commit message, use the following format:

<command>: type of change

Examples:

ls: add page
cat: fix typo
git-push: add --force example
uname: fix -a example

Licensing

tldr is licensed under the MIT license.

IMPORTANT: By submitting a patch, you agree to license your work under the same license as that used by the project.

You're free to modify or redistribute the content. That being said, but why not contribute over here? :) Say if you wanted to have tldr pages in groff format, why not have a client that uses pandoc and periodically updates straight from this repo?

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