watch

Execute a command repeatedly, and monitor the output in full-screen mode. More information: https://manned.org/watch.

• Monitor files in the current directory:

watch ls

• Monitor disk space and highlight the changes:

watch -d df

• Monitor "node" processes, refreshing every 3 seconds:

watch -n 3 "ps aux | grep node"

• Monitor disk space and if it changes, stop monitoring:

watch -g df