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Full Discussion: interviewing linux admin
Operating Systems Linux interviewing linux admin Post 302074732 by Perderabo on Thursday 25th of May 2006 12:51:21 PM
Old 05-25-2006
I will ask a few basic questions like "Without using useradd or a management gui, but just using an editor, how do you add a user to the system?"

But mostly I like to go with broad sweeping questions:
Which of the various filesystems available on Linux do you like the best? Why?

Let's say I ask you to spend an hour and give a Linux system a quick check for any blantant security problems. What would you look for?

You get complaints that folks cannot telnet into a linux system that should be supporting telnet. (And this used to work yesterday.) You go into the computer room and find that you can log on normally using the system console. How would you troubleshoot the telnet issue?

That is really more than enough questions. None of them have right or wrong answers. I am really looking for depth of knowledge. A person who can think of a dozen things to check to troubleshoot the telnet issue is worth much more than a person who can only state that he would check the network cable. Even if the first guy makes a few errors, this continues to be true.
 

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RXTELNET(1)						    BSD General Commands Manual 					       RXTELNET(1)

NAME
rxtelnet -- start a telnet and forward X-connections. SYNOPSIS
rxtelnet [-l username] [-k] [-t telnet_args] [-x xterm_args] [-K kx_args] [-w term_emulator] [-b telnet_program] [-n] [-v] host [port] DESCRIPTION
The rxtelnet program starts an xterm window with a telnet to host host. From this window you will also be able to run X clients that will be able to connect securely to your X server. If port is given, that port will be used instead of the default. If setting up the X forwarding failes, rxtelnet will still telnet in to the remote host, but without X forwarding. The supported options are: -l Log in on the remote host as user username. -k Disables keep-alives. -t Send telnet_args as arguments to telnet. -x Send xterm_args as arguments to xterm. -X Send kx_args as arguments to kx. -w Use term_emulator instead of xterm. -b Use telnet_program instead of telnet. -n Do not start any terminal emulator. -v Be verbose. EXAMPLE
To login from host foo (where your display is) to host bar, you might do the following. 1. On foo: rxtelnet bar 2. You will get a new window with a telnet to bar. In this window you will be able to start X clients. SEE ALSO
kx(1), rxterm(1), telnet(1), tenletxr(1), kxd(8) KTH_KRB March 7, 2004 KTH_KRB
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