Latency functions in Linux Shell

Latency functions in Linux Shell

Latency processing is often required in Linux shell scripts.

Therefore, sleep or usleep functions are often used.

The difference between sleep and usleep is as follows:

Sleep: the default unit is seconds.

Usleep: measured in microseconds by default.

1 S = 1000 ms = 000000us

Sleep not only uses seconds, but also specifies the unit of latency. For example:

Sleep 1 s indicates a delay of one second.

Sleep 1 M indicates a delay of one minute.

Sleep 1 h indicates that the delay is one hour.

Sleep 1D indicates a delay of one day.

Original article:

Http://hi.baidu.com/fangqianshu/item/1128d317ed41c46d1009b53e