I usually do alot of checking on more critical file I/O, instead of blindly opening, and I once so often even do a forced check on file permissions (which ofcourse will break the script on platforms that don't support it).
Locking will only work on processes that understand the concept. If applications don't obey file locking, they can do whatever they want with the files. Perl, ofcourse, obeys the locking.
Not all OSs have flock implemented, good example: Windows (not that I use it). flock will actually break your script if it's run on a platform that doesn't support it.
What about the file versus dir check? A file can be opened, a dir can't (in a file meaning). Will -d suffice enough? =)

In reply to Re: Re (tilly) 1: is I/O checking worth it? by Beatnik
in thread is I/O checking worth it? by Beatnik

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