Truncating a file while it's being used (Linux)

Question

I have a process that\'s writing a lot of data to stdout, which I\'m redirecting to a log file. I\'d like to limit the size of the file by occasionally copying the current

Answer 1

I had a similar issue on redhat v6, echo > file or > file was causing apache and tomcat to go faulty as log files would become inaccessible to them.

And the fix was strange

echo " " > file

would clean the file and not cause any problem.