Very Computer

Hi everyone,

Just wondered if anyone could tell me the major differences between Sys5 and
Solaris. I only ask because Sys5 is the only form of Unix that I have been
exposed to and seeing as how Solaris appears to be the most popular Unix
flavour at the moment I would like to learn try my hand at it!

Thanks,

Solaris IS System V, Release 4.

   Like most of the SVR4 derivatives, SunOS/Solaris has the good
   sense to trashcan the ATT printer stuff and use the BSD.  And
   several other BSD type tricks.  All of the first generation
   SVR4 versions I can think of were disasters...quickly modified
   to add the good stuff from BSD back in.

I don't know for sure where the print stuff in Solaris 7 & 8 came from,
but I guarantee you that it isn't BSD except lpc in /usr/ucb and
perhaps the in.lpd daemon called by inetd.  The BSD lpd requires a
printcap and there is no such animal in Solaris now.

Best thing, IMHO, to do with the installed lp packages (7 of them) is
to remove them all and replace the mess with LPRng, which is an updated
and enhanced version of BSD lpd.

No real differences then!

Thanks Dave!

Quote:> Hi everyone,

> Just wondered if anyone could tell me the major differences between Sys5
and
> Solaris. I only ask because Sys5 is the only form of Unix that I have been
> exposed to and seeing as how Solaris appears to be the most popular Unix
> flavour at the moment I would like to learn try my hand at it!

> Thanks,

Thanks Lon!

Quote:> Hi everyone,

> Just wondered if anyone could tell me the major differences between Sys5
and
> Solaris. I only ask because Sys5 is the only form of Unix that I have been
> exposed to and seeing as how Solaris appears to be the most popular Unix
> flavour at the moment I would like to learn try my hand at it!

> Thanks,

Quote:> Hi everyone,

> Just wondered if anyone could tell me the major differences between Sys5 and
> Solaris.

The most significant difference is Solaris has a fully preemptive
multi-threaded kernel, and System 5 doesn't. Amongst other things,
this enables Solaris to support a mixture of realtime scheduled
threads/processes together with a number of more conventional unix
scheduling schemes. This is also very important for scaling to
many tens of CPUs, which Solaris is well known for - unixs with
more conventional kernels don't tend to scale well past a handful
of CPUs.

Quote:> I only ask because Sys5 is the only form of Unix that I have been
> exposed to and seeing as how Solaris appears to be the most popular Unix
> flavour at the moment I would like to learn try my hand at it!

Solaris includes all System 5 Release 4 interfaces and commands.

--
Andrew Gabriel