How to view file changes live?

To view file changes live in a terminal, you can use the tail command with the -f option. This allows you to monitor a file in real-time as new lines are added. Here's how to do it:

tail -f filename

Replace filename with the name of the file you want to monitor. As new content is appended to the file, it will be displayed in the terminal.

If you want to view changes in a more comprehensive way, you can also use the less command with the +F option:

less +F filename

This will allow you to scroll back through the file while still monitoring it for new changes. To exit the monitoring mode in less, press Ctrl+C, and you can then scroll through the file as needed.