Example of my usage in an old job. We would submit jobs to a cluster. That cluster would have a queue, and there was a command to see the state of all jobs (wa

Example of my usage in an old job. We would submit jobs to a cluster. That cluster would have a queue, and there was a command to see the state of all jobs (waiting, running, etc). So I'd invoke it with the "watch" command so I can see the status of all my jobs and know when they've all done executing. I'm sure there are hundreds of other uses.