# rebar_cmd [](https://github.com/gootik/rebar_cmd) [](https://hex.pm/packages/rebar_cmd)
Run custom shell commands with `rebar3 cmd <command>`.
## Purpose
The goal of this plugin is to allow `rebar3` to run additional commands, so
that one can use it solely to manage everything in an Erlang project.
Whether it is bringing Docker containers up, tagging a new Git release or
deleting log files, you should be able to use a single build tool.
## How it works
This is a very simple and straightforward plugin. Simply describe your
command in `rebar.config` and execute (just like you would Linux aliases)
with `rebar3 cmd <command>`.
## Usage
Add the plugin to your `rebar.config`:
```erlang
{plugins, [
{rebar_cmd, "0.2.6"}
]}.
{commands, [
{docker_up, "docker-compose up -d"},
{sync, "git fetch upstream && git merge upstream/master"}
]}.
```
The example above shows you how to describe a command to bring your
Docker containers up, as well as another one to sync a Git repository
with remote master.
Some options are available, as described below:
* `[{timeout, <Ms>}]` (defaults to `15000`)
* `[{verbose, <Verbose>}]` (defaults to `false`)
e.g. you could change the previous `docker_up` command to have it fail
after 5s with `{docker_up, "docker-compose up -d", [{timeout, 5000}]},`.
You could also get more info from the shell for the above command
`sync` with
`{sync, "git fetch upstream && git merge upstream/master", [{verbose, true}]}`
Check it out:
```bash
$ rebar3 cmd sync
===> Analyzing applications...
===> Compiling rebar_cmd
===> Command sync resulted in: "Already up to date."
```
