From your steps, it looks like you start the reader (the perl script), then write something to the file, then kill the reader, then try to write to the file again. I think this is expected behavior (unless the FIFO is opened in non-blocking mode) because an open for reading or writing will block unless another open for the opposite is done (both ends need to be opened, reading and writing). When you kill the reader end of the named pipe your writer blocks because there is no one on the other end to read from it.

I can't get my examples to recreate the ETXTBSY error, but I suspect that is what this is referring too. If you tail the FIFO in another terminal window and then do that last echo you should work w/o the error.

---
echo S 1 [ Y V U | perl -ane 'print reverse map { $_ = chr(ord($_)-1) } @F;'
Warning: Any code posted by tuxz0r is untested, unless otherwise stated, and is used at your own risk.

In reply to Re^3: named pipe and "Text file busy" by tuxz0r
in thread named pipe and "Text file busy" by finpro

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