Linux Commands-Watch: Execute commands repeatedly, full screen display output

The watch command executes the command periodically, displaying the output in full screen. A program can be repeatedly executed by the Watch command to monitor its output changes.

Command format

Watch [-DHVT] [-n <seconds>] [--differences[=cumulative]] [--help] [--interval=<seconds>] [--no-title] [-- Version] <command>

Command parameters

-N,--interval
Specify a time interval. By default, watch executes the command every 2 seconds.

-D,--differences
Highlight the area of change. The-d=cumulative option highlights all areas that have changed (including those that have been changed).

-T,-no-title
Close the time interval, commands, and so on that appear at the top.

-H,--help
Show Help Document

Instance

A) All TCP protocol connections are displayed every 2 seconds

Watch Netstat-ant

b) Display of user information logged in every 30 seconds

Watch-n W

c) Monitor a file to highlight its changing content

Watch-d Cat/proc/loadavg

Linux Commands-Watch: Execute commands repeatedly, full screen display output