GNU shell utilities - 12. Delaying

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# 12. Delaying

## 12.1 `sleep`: Delay for a specified time

`sleep` pauses for an amount of time specified by the sum of the values of the command line arguments. Synopsis:

    sleep [number[smhd]]...

Each argument is a number followed by an optional unit; the default is seconds. The units are:

``s'`
  seconds
``m'`
  minutes
``h'`
  hours
``d'`
  days

The only options are ``--help'` and ``--version'`. See section 2. Common options.

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