bsd and linux

**whisker** · 05-24-2005

is BSD the same as linux?

**serz** · 05-24-2005

No, BSD is UNIX, and Linux being a UNIX-like system it has similarities.

**whisker** · 05-25-2005

oh ok

**sether** · 05-25-2005

http://www.over-yonder.net/~fullermd...bsd4linux1.php

**ama** · 05-30-2005

BSD is not UNIX, Linux has more in common with UNIX now than BSD.

**sether** · 05-31-2005

Originally Posted by ama

BSD is not UNIX, Linux has more in common with UNIX now than BSD.

How so? I agree that they're both not UNIX, as UNIX is a trademark of the Open Group. But GNU/Linux was written entirely from scratch to mimic UNIX, while BSD is actually derived from UNIX source code, hence the name "Berkeley UNIX" when it was being developed at the University of California, Berkeley. Some of the UNIX source code is still intact in many of the BSDs, while there is absolutely none in GNU/Linux.

**serz** · 05-31-2005

Originally Posted by ama

BSD is not UNIX, Linux has more in common with UNIX now than BSD.

Nope, you're wrong.

**eugrus** · 05-31-2005

Originally Posted by ama

BSD is not UNIX, Linux has more in common with UNIX now than BSD.

SCO UnixWare, MS Xenix, Sun Solaris, BSD-systems have some kernel code same with the one was in AT&T UNIX

Linux does not.

But all they are compaitable with POSIX standarts of UNIX-like systems. (API, main commands list)

And actually UNIX® is now a registered trademark of The Open Group.

So, any system's, compaitable with POSIX standarts of UNIX-like systems, developers could pay some money to OpenGroup to call there system UNIX®.

But SCO UnixWare, MS Xenix, Sun Solaris, (the most of) BSD-like systems have some kernel code same with the one was in AT&T UNIX.

So, you should decide what do you call "UNIX". It could be:

AT&T UNIX
System compaitable with POSIX standarts of UNIX-like systems whose developers payed to OpenGroup
POSIX compaitable system (the one we call UNIX-like)

You should also understand what do you call BSD: either Berkley UNIX system or System with BSD initial system.

**ama** · 06-01-2005

No Open Source BSD has any UNIX source code in it. NetBSD, OpenBSD, and FreeBSD are all based off of 4.4 BSD lite-2, which unencombered with original UNIX source-code. So your claim that the BSD's still contain original UNIX source-code is untrue.

As for my statement that GNU/Linux has more in common with UNIX is true. All UNIX now adays conform to the Single Unix Specification, which is heavily based on POSIX. GNU/Linux has greater support for POSIX and its working groups than BSD. About one year ago, FreeBSD just received permission to incorporate POSIX features/standards into their system.

**jaboua** · 06-01-2005

But it is still based off unix. What you're saying is almost like to say "linux has more in common with windows 3.1 now in these days than windows XP since almost nothing of the original windows3.1-source still remains"

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