# The Output Function

    
    output(<file name>)
    

### Behavior

The `output` function defines an explicit output for a command. It is similar to using a [Produce](Language/Produce) clause but can be used inline with the definition of a command, using the form `${output(...)}`. In some situations it may be clearer to define outputs in line this way since the definition is collocated with its use. However in many cases it will be clearer to a reader if a [Produce](Language/Produce) clause is used to show very clearly what outputs are created.

### Examples

**Cause output to go to file "foo.txt"**
```groovy 

  hello = {
      exec """echo world > ${output("foo.txt")}"""
  }
```