Command to refresh output of other command

Question

If I have a command that each time gives me an output. How I can do it to refresh my output every 2 seconds, for example?. I think this command will work.

Example:

cat /proc/mdstat 

[======>..............]  resync = 30.8% (150544832/488383936) finish=65.8min speed=85472K/sec

othercommand cat /proc/mdstat

Answer 1

I think you are looking for the watch command.

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