See also: Calendar and Time of Day - Calendar and Time of Day (conversions, manipulations, etc)

sleep(1) - suspend execution for an interval of time {oss}

time(1) - time command execution {oss}

Applications and Utilities

alarm (3) - set signal timer alarm {oss}

getitimer setitimer (2) - get/set value of interval timer {oss}

time (3) - get time of day {oss}

gettimeofday settimeofday (2) - get/set date and time {oss}

nanosleep (2) - suspend process execution for interval of nanoseconds {oss}

Libraries and Functions

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See also: Process Signals and Events - Sending and handling signals and events.

Up to Hardware Access - Gateway topic to hardware and real-time related processing routines.