ubuntu at westexe.demon.co.uk
Thu May 12 16:41:10 UTC 2005
Stephen R Laniel wrote:
> The problem is that by
> default -- and unintuitively, I think -- bash doesn't look
> in the current directory for executable commands. There's
> probably a good reason for it, but it differs from, for
> instance, the MS-DOS shell's behavior.
Well, MS-DOS isn't a multi-user operating system. Basically, under
MS-DOS, everything is trusted, everything is allowed (or plain
Unix is designed for situations where one user (which might or might not
be root) can investigate a directory whose contents have been controlled
by an untrusted user.
Imagine a university systems administrator, with a box that has shell
access available to students, and a new student whose principal
interests are warez, cracking, porn, and a *really* fast internet
Imagine the sysadmin investigating some processes that seem to be
racking up a lot of CPU time, network traffic, and "temporary" files in
/var/tmp. And wanting to look in the student's home directory.
Or imagine her investigating the ftp upload directory.
She does *not* want to try running any of those files unless she
explicitly requests it. (And, if she has any sense, she will only try
running anything on a honeynet box  or something completely
 It took me ten years to get the Internet speeds outside university
that I had when I arrived at university.
 Honeytrap, honeynet: systems or networks that are kept well away
from "real" networks, designed to attract crackers and other low-life
and allow observation in something like their natural environment.
Results may well be passed to the police.
E-mail address: james | "My aunt's camel has fallen in the mirage."
@westexe.demon.co.uk | -- "Soul Music", Terry Pratchett.
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