SSK wrote:

What i am trying to do is,i have to run multiple perl programmes all at
once
to change the contents of a text file.
-------------

As I see it you should build intelligence into your programs so that on
one active program attempts open/read/write to the file at a time. If
you are on a Win32 platform look into Win32::Semaphore and Win32::Mutex.
I have successfully accomplished a similar task having many child
processes logging to a common parent process log file using Win32::Mutex
as a way for the process to determine if another is currently using the
file.

Also there is also flock to apply your own file lock.
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