How to use watch command in Linux system

This article mainly introduces how to use the watch command in the Linux system, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

The main function of the watch command in the Linux system is to monitor the running results of a command, and almost all Linux distributions come with watch.

Syntax watch [parameters] [command] argument:-n or-interval watch runs the program every 2 seconds by default, and you can specify the interval with-n or-interval.

-d or-differences use the-d or-differences option, and watch highlights the changed area. The-d=cumulative option highlights where it has changed (regardless of the most recent change or not).

-t or-no-title closes the output of the watch command at the top of the interval, the command, the current time.

-h-help view help documentation

Case demonstration: 1) execute the uptime command repeatedly, by default every 2 seconds.

Watch ``uptime (2) to see the changes in the current directory file log.

Watch``-d ``"ls-l | grep log" Note that when the monitoring command contains pipes, you need to enclose them in quotation marks.

(3) check the average load of the system every 10 seconds.

Watch``-n10 ``cat`` / proc/loadavg (4) highlight the changes in the number of network connections every 1s.

Watch``-N1-d ``netstat`-ant thank you for reading this article carefully. I hope the article "how to use watch commands in Linux system" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!