LinuxCommandLibrary

usleep

TLDR

Sleep microseconds

$ usleep [1000000]
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Sleep 100ms
$ usleep [100000]
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Sleep 1ms
$ usleep [1000]
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SYNOPSIS

usleep microseconds

DESCRIPTION

usleep sleeps in microseconds. It pauses execution.
Microsecond precision. Fine timing.
Script delays. Short pauses.
Simple interface. One argument.
Legacy command. Use sleep with decimals.

PARAMETERS

microseconds

Time to sleep.

CAVEATS

Deprecated on many systems. Use sleep instead. Not in all distros.

HISTORY

usleep was provided by initscripts package for microsecond sleep. Modern sleep accepts fractional seconds.

SEE ALSO

sleep(1), nanosleep(2)

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