A question about read() system call!!

[Jonathan I. Kamens]

  The default behavior of read() is to wait until there is something to read
unless either (a) you have reached EOF, in which case it returns 0, or (b)
there has been some error, in which case it returns -1.

  The "Frequently Asked Questions about Unix" posting in this newsgroup
discusses, in question number 7 how to check if there are characters to read
without reading them, and how to read if there are characters to read but
return otherwise.

  If the FAQ posting has expired at your site, you can get a copy using the
instructions at the end of this message.  It is usually a good idea to read
the FAQ posting, or at least to scan it looking for material that might help
you, before posting a question in any of the comp.unix newsgroups.

-- 
Jonathan Kamens			              USnail:
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