Amazon CodeCatalyst is no longer open to new customers. Existing customers can continue to use the service as normal. For more information, see [How to migrate from CodeCatalyst](migration.md).

# Devfile commands
<a name="devenvironment-devfile-commands"></a>

Currently, CodeCatalyst only supports `exec` commands in your devfile. For more information, see [Adding commands](https://devfile.io/docs/2.0.0/adding-commands) in the Devfile.io documentation.

The following example shows you how to specify `exec` commands in your devfile.

```
commands:
  - id: setupscript
    exec:
      component: test
      commandLine: "chmod +x script.sh"
      workingDir: /projects/devfiles
  - id: executescript
    exec:
      component: test
      commandLine: "./projects/devfiles/script.sh"
  - id: updateyum
    exec:
      component: test
      commandLine: "yum -y update --security"
```

After you're connected to your Dev Environment, you can execute defined commands through the terminal.

```
/aws/mde/mde command <command-id>
/aws/mde/mde command executescript
```

For long running commands, you can use the streaming flag `-s` to output the execution of the command in real time.

```
/aws/mde/mde -s command <command-id>
```

**Note**  
`command-id` must be lower case.

## Exec parameters supported by CodeCatalyst
<a name="devenvironment-exec-support"></a>

CodeCatalyst supports the following `exec` parameters on devfile version 2.0.0.
+ `commandLine`
+ `component`
+ `id`
+ `workingDir`