Re: OT, was RE: Tacacs+ for home Use? and Passed CCIE written [7:14503]

2001-08-01 Thread data com 

Carroll,

I got CCNP and CCDP but I am pretty new to UNIX system.
I want to lean UNIX with a focus on networking part for the following 
reasons.
-integrate UNIX system to the internetwork
-use UNIX for device management using scripts

Now, what flavour of UNIX do you recommend to learn as a start? I suppose 
there is a flavour which contains many commands that also work on other 
systems, and also a flavour that is most commonly used.

Thank you in advance,
Marc


At 07:20 PM 7/31/01 -0400, Jonathan Hays wrote:
No keyboard? It depends.

While it's true that native UNIX workstations (Sun, HP, etc.) will run
headless, most
Intel x86 boxes I have encountered require you to plug in a keyboard or the
machine
won't boot, regardless of the OS installed. Or is there a way around this I
don't know
about?
---
Jonathan

Ah, good point.  Now why would it not care which OS?  The bios.  Crapola
bios which give you very little flexibility (enter most commercial packaged
PCs with their crap bios) have this problem.  If you get a good Asus
Motherboard (actually a LOT of vendors give you this flexibility), their
bios have this option called

Halt On Error:  All Error

Change it to No Errors
Your PC will easy POST without the need for a keyboard after this
change.  For FreeBSD, you probably want to modify the kernel to always
force on the keyboard.  You can also recompile the kernel to enable a
serial console so it works like the bad-boy Unix Workstations.  (need a
null serial modem cable and you are ready to rock and console  :)  )

Reason why you want FreeBSD to always force on the keyboard.  If you do
not plug in the keyboard, let the box boot, and then plug the keyboard back
in, you cannot type anything in.  With always force on, it will work
afterwards.  Of course, this is only the case if you really messed up the
box (kernel panic, ip misconfiguration, firewall rules that kick you off)
and your boss forgot to buy that access console server.

Linux also has a serial console capability IIRC.  If anyone here learns
basic FreeBSD on their own and needs help for doing some of these more
advanced features, I will easily lend a hand.



-Carroll Kong





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Re: OT, was RE: Tacacs+ for home Use? and Passed CCIE written [7:14539]

2001-08-01 Thread data com 

Carroll,

Thank you so much for the detailed reply.

Would you recommend any books? (I've read Using UNIX -QUE-. I have 
installed and played with FreeBSD a little bit. I have no exposure to 
production UNIX environment.)

Thanks,
Marc


From: Carroll Kong 
To: data com 
CC: [EMAIL PROTECTED]
Subject: Re: OT, was RE: Tacacs+ for home Use? and Passed CCIE written  
[7:14428]
Date: Wed, 01 Aug 2001 13:03:42 -0500

At 03:16 PM 8/1/01 +, data com wrote:
Carroll,

I got CCNP and CCDP but I am pretty new to UNIX system.
I want to lean UNIX with a focus on networking part for the following 
reasons.
-integrate UNIX system to the internetwork
-use UNIX for device management using scripts

Now, what flavour of UNIX do you recommend to learn as a start? I suppose
there is a flavour which contains many commands that also work on other
systems, and also a flavour that is most commonly used.

Thank you in advance,
Marc

I suggest FreeBSD, but any Unix can be leveraged as a basic learning tool
to learn other Unices.  If you really understand the concepts and theory of
how unix systems are designed, you can easily adopt other unices.

The problem with the universal flavor is that all unices for the most
part have their roots within two types of unix systems.  BSD and
SysV.  Most commercial unices will be very SysVish.  This means their init
scripts are usually different, and the layout is going to be different than
a BSD like machine.  The freeware OSes tend to be very BSDish.

Unfortunately, this puts you in a bind.  There really is no one unix to
rule them all.  :(  Even if you do pick a BSDish like userland like
FreeBSD, some binaries are different than say Redhad Linux.  Things like
route print would not work in FreeBSD, but netstat -rn would work in
FreeBSD and in Solaris x86!

In BSDish (and open source) terms, Linux distributions are probably the
most used.  However, they seem to do a lot of nasty non-standard things
like Microsoft.  Namely, their GNU route and GNU netstat are drastically
different.  Plus, their /bin/sh is NOT shell script but rather
BASH!  ARGH!  I feel FreeBSD is far cleaner.

In SysV (and commercial) terms, Solaris has definitely become a king.  If
you want to get good with SPARC hardware, buy a Sun Blade.  (not suggested
unless you REALLY want to be a Sun head)  If you just want to learn
Solaris, you are in luck as Solaris x86 is available for free I
believe.  (I bought my copy for ~$80bucks?).  Solaris x86 will most
definitely be less forgiving on the hardware support.

I feel any BSD, Linux, or Solaris are great starters.  Just pick one, and
get really good with it.  The others will be easily acquired if you run
into them.  Learn any of them well enough, and you can easily do the two
things you mentioned.
-integrate UNIX system to the internetwork
-use UNIX for device management using scripts

Good luck!



-Carroll Kong



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