utilites: watch

 

watch — utility to run some scripts or binaries after a certain time (default 2 seconds)

watch df -h // will be every 2 seconds to display information about free space on the drive, IMHO very useful.

watch -n 60 df -h // df will display once a minute

watch -n 60 -d df -h // will show the difference between 2 commands

watch -n 60 -d=cummulative df -h // Show the cumulative difference