Clear file log contents

[shineworld]

In my configuration I log to file continously (infinite file).
At program start I delete log file to start with a clean log file content.
There are cases, during debug, in which I would like to clear log file contents, to better track error, calling a method, without stop and restart app.

There is a way, during debug and logger activities, to say "Hei clear log and related log file and restart from zero ?".

Thank you advance for reply.