usleep - sleep some number of microseconds
usleep [number]
usleep sleeps some number of microseconds. The default is
1.
--usage Show short usage message.
--help, -?
Print help information.
-v, --version
Print version information.
Probably not accurate on many machines down to the
microsecond. Count on precision only to -4 or maybe -5.
Donald Barnes <djb@redhat.com>
Erik Troan <ewt@redhat.com>