You may be interested in this thread which uses ftok from the module IPC::SysV.

As your code stands it can not possibly work - function calls don't interpolate. open( F, "./ftok $file_shmem 1 |" ); will attempt to open a file called "./ftok /tmp/IPC/shared_memory1 1 |", which is probably not what you expect.

DWIM is Perl's answer to Gödel

In reply to Re: use ftok to access shared memory by GrandFather
in thread use ftok to access shared memory by earlati2

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