write data to a file in every loop

Hi everyone,

I'm using if and label command to generate loops in a script. I'm using the fix ave/time command to write data to a file each time running through the loop. What I want is to write data into a file every loop. But this command replace the data in the file created in every loop time. Are there any methods to add data to a file rather than replace the data in each loop?

Thanks a lot

J. Wang