echo "">access_log How to clear a log file without deleting it?

 Do you want to debug a file and realize it has too much of content in it.

Let's say the file name is access_log.

just say echo "">access_log.

This will replace the content with the blank file.

Now your file is ready to starting logging data from now :-).

Note: Please use this at your own discretion. This is just a workaround.