Shell Programming and Scripting

Yes, but what is not working? Are you saying the file never gets overwritten, or that the new file contains zero bytes but is never appended to after that?

Yes, the file never gets overwritten.

Well, assuming you have the correct pathname for the file, it would seem to be a windows thing.

I tried using system("echo.> logserver.txt"); and I got the message as "The process cannot access the file because it is being used by another process."

Later, I opened the txt file and deleted the contents manually and saved it on the same place. It asked me whether to replace the existing file and I clicked Yes. This time, it got saved and the file size was 0 bytes. My question is when Im able to do it manually, why the script gives an error message? Please see that I didnt stop the service when I deleted the content and saved the file.

I'm sorry, it's a Windows thing. Windows probably has some kind of mandatory file locking mechanism. In UNIX it's generally advisory (optional). Maybe search the net and the Perl-Windows ports for dealing with "file locking"

Thanks for your valuable inputs. I will try searching in the net.

Could be when you open it later the file is no longer in use by another process. Windows does not allow files that are in use by certain processes to be opened more than once. There is no way around it that I know of.