How to empty (“truncate”) a file on linux that already exists and is protected in someway?

Question

I have a file called error.log on my server that I need to frequently truncate. I have rw permissions for the file. Opening the file in vi > deleting all content > saving wo

Answer 1

the credit goes for my senior colleague for this:

:> filename

This will not break log files, so you can even use it on syslog, for example.