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- alarm seconds
- Instructs the system to send a SIGALRM signal in the
- specified number of seconds. This is a floating point
- number, so fractions of a section may be specified. If
- seconds is 0.0, any previous alarm request is canceled.
- Only one alarm at a time may be active; the command
- returns the number of seconds left in the previous
- alarm. On systems without the setitimer system call,
- seconds is rounded up to an even number of seconds.
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