usleep Delay execution in microseconds &reftitle.description; voidusleep intmicro_seconds Delays program execution for the given number of microseconds. &reftitle.parameters; micro_seconds Halt time in microseconds. A microsecond is one millionth of a second. &reftitle.returnvalues; &return.void; &reftitle.examples; ]]> &example.outputs; &reftitle.seealso; sleep time_nanosleep time_sleep_until set_time_limit