The command `tail -f wrapper.log` is used to: 1. **`tail`**: Display...

The command tail -f wrapper.log is used to:

1. tail: Display the last part of a file.
2. -f flag: Follow the file, meaning it continually outputs new lines as they are appended to the file in real-time.

So, this command displays the last few lines of the file wrapper.log (usually 10 lines by default) and then keeps monitoring the file for any new lines being added, showing them in real-time. It is often used for monitoring log files while they are being written (e.g., by an application or service).