On Wed, 26 Sep 2007 21:29:46 UTC, "dennis@home"
wrote:

"Bob Eager" wrote in message
...
On Wed, 26 Sep 2007 20:14:44 UTC, "dennis@home"
wrote:

As for the difference between Linux and open source then Linux is a tiny
bit
of open source that does similar to the Unix kernel in as much as it has
the
same interfaces and similar behavior. Is that enough or do you want the
full
works?

Broadly similar interfaces...try building the same program for Linux,
and one of the few real Unix systems, and you'll find out the
differences.

If you stick to the common stuff you will be OK most of the time, well maybe
if you follow the portability rules.
Having seen how many variables there are in some of the makefiles just for
different distros which should be similar you soon realize that even if it
is supposed to be the same it may not be. Fortunately I no longer program
for Unix at work and I certainly don't at home.

Which is why we have the dreaded GNU autoconf. I stopped programming for
UNIX years ago, but still do quite a bit on FreeBSD and (occasionally)
Linux. We use true UNIX at work, but I don't program for it there.

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