How to Use the Linux watch Command with Pipeline Commands

[aaron]

   
   

How to Use the Linux watch Command with Pipeline Commands

   

The watch command can also be helpful with other pipeline commands:

   

Monitoring Files

   

To view a particular file's status or its changes, use the following command:

   

watch -d 'ls -l | fgrep newuser'

   

Here, "newuser" is the username, and "ls -l" represents the files in the user directory.

   

Using watch Command as a Clock

   

You can use the watch command as a clock by executing the specified command below:

   

watch –t date

   

The executed "date" command will display the clock and date only.

   

Viewing Network Status

   

It's possible to use the watch command to monitor your network. For example:

   

watch "netstat -anp | grep -c ':22\b.*LISTEN'"

   

The command will display active connections on port 22.

   

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