With this, you can watch the output of the command change over time. Consider watch to be similar to that of using the tail command to view log files, only the output doesn't come from a file, but another command. The watch command allows you to execute a program periodically, displaying the output of the command at specific intervals. I want to introduce you to watch, so that it can help you with your Linux admin tasks. The watch command comes installed, by default, on nearly all Linux distributions and is a very useful tool to have at the ready.
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