Linux Watch command-real-time monitoring of command run results

Linux Watch command-real-time monitoring of command run results

Watch is a very useful command, like a name, watch can help you monitor the results of a command, save you to run manually over and over again.

Usage:

Immediately after the watch you want to run the command, watch will help you repeat the operation, and the results are updated every time on the screen. The default watch repeats the command at 2s intervals, and you can specify the time interval by using the-n parameter.

Another useful parameter is-D, so watch will help you highlight the area of change, so you can see it more clearly.
CTRL + C can exit ~

You can use him to monitor everything you want. The result of the command changes, such as tail a log file, ls monitoring a file size changes, see your imagination ~

Under Linux, watch is the periodic execution of the next program, and full-screen display of the execution results.

-d,–differences[=cumulative] Highlighting changes
-n,–interval=<seconds> cycle (seconds)

such as: Watch-n 1-d netstat-ant

In order to express clearly, it is generally enclosed in double quotes, such as "tail-50 Access.log".

You can also use pipe symbols:

Watch-n 1-d "DMESG |tail"

This article is from the "Cool bit Linux" blog, so be sure to keep this source http://coolbyte.blog.51cto.com/8289854/1688541

Linux Watch command-real-time monitoring of command run results