Just trying to find out a few things .... Post: 302211473

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Top Forums UNIX for Dummies Questions & Answers Just trying to find out a few things .... Post 302211473 by jim mcnamara on Thursday 3rd of July 2008 12:08:38 PM

07-03-2008

Registered User

The original UNIX from Bell Labs was provided free on a tape. Later on the OS diverged into different directions, like BSD or System V. During the late 80's and early 90's the OS releases became very proprietary - Sun had one, Hewlett Packard another, and so on. This proliferation of UNIX systems also is known as flavors.

Things are opening up in part because of the open source movement. So, everyone realized that having different commands (or C functions) for the same thing or commands with the same name with different behaviors was a bad thing. So we have an alphabet soup of proposed standards.

Currently, POSIX standards are the one most OS developers try to follow. This means that development is easier when you have to write the same code for Solaris, HPUX, and Linux.

The reason we have to know what OS we are talking about is that some have "bizarre"
features. If we give an answer without knowing which flavor, we may give a bad answer. The Solaris version of awk is an example of a kind of bizarre version of a UNIX tool, for example.

Maybe try downloading knoppix, it is smaller than some others. Damn Small Linux is smallest UNIX meant for desktops ~50MB.
DSL information

The download time is a function of your connection speed. If you are at dialup speeds something like knoppix will take overnight. 1.5Mb DSL connection maybe several hours.

jim mcnamara

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LEARN ABOUT DEBIAN

pppoe-sniff

PPPOE-SNIFF(8)						      System Manager's Manual						    PPPOE-SNIFF(8)

NAME

       pppoe-sniff - examine network for non-standard PPPoE frames

SYNOPSIS

       pppoe-sniff [options]

DESCRIPTION

       pppoe-sniff listens for likely-looking PPPoE PADR and session frames and deduces extra options required for pppoe(8) to work.

       Some  DSL providers seem to use non-standard frame types for PPPoE frames, and/or require a certain value in the Service-Name field.  It is
       often easier to sniff those values from a machine which can successfully connect rather than try to pry them out of the DSL provider.

       To use pppoe-sniff, you need two computers, a DSL modem and an Ethernet hub (not an Ethernet switch.)

       If the DSL modem normally connects directly to your computer's Ethernet card, connect it to the "uplink" port on the  Ethernet  hub.   Plug
       two  computers into normal ports on the hub.  On one computer, run whatever software the DSL provider gave you on whatever operating system
       the DSL provider supports.  On the other computer, run Linux and log in as root.

       On the Linux machine, put the Ethernet interface into promiscuous mode and start pppoe-sniff.  If the ethernet interface is eth0, for exam-
       ple, type these commands:

	    ifconfig eth0 promisc
	    pppoe-sniff -I eth0

       On  the	other  machine, start your DSL connection as usual.  After a short time, pppoe-sniff should print recommendations for the value of
       PPPOE_EXTRA.  Set this value in /etc/ppp/pppoe.conf.  If pppoe-sniff indicates that something special is required in PPPOE_EXTRA, please e-
       mail this to pppoe@roaringpenguin.com along with the name of your ISP and the manufacturer and model number of your DSL modem.  This infor-
       mation will be collated and provided on the PPPoE web page for users who do not have two computers.

       After pppoe-sniff finishes (or you stop it if it seems hung), remember to turn off promiscuous mode:

	    ifconfig eth0 -promisc

OPTIONS

       -I interface
	      The -I option specifies the Ethernet interface to use.  Under Linux, it is typically eth0 or eth1.  The interface should be "up" and
	      in promiscuous mode before you start pppoe-sniff.

       -V     The -V option causes pppoe-sniff to print its version number and exit.

BUGS

       pppoe-sniff only works on Linux.

AUTHORS

       pppoe-sniff was written by David F. Skoll <dfs@roaringpenguin.com>.

       The pppoe home page is http://www.roaringpenguin.com/pppoe/.

SEE ALSO

       pppd(8), pppoe(8), pppoe-sniff(8), pppoe-relay(8), /usr/share/doc/pppoe/README.Debian.gz

4th Berkeley Distribution					    3 July 2000 						    PPPOE-SNIFF(8)