"Shellshock" bash bug

Peter Smout smoutpete at gmail.com
Sat Sep 27 14:59:07 UTC 2014


On 27/09/14 13:37, Johnny Rosenberg wrote:
> 2014-09-27 13:32 GMT+02:00 Nils Kassube <kassube at gmx.net
> <mailto:kassube at gmx.net>>:
>
>     Colin Law wrote:
>     > On 27 September 2014 11:05, Graham Watkins <shellycat.gw at ntlworld.com <mailto:shellycat.gw at ntlworld.com>>
>     wrote:
>     > > The result I get is:
>     > >
>     > > "$: command not found"
>     >
>     > You were not supposed to copy the $, just from env
>
>     That's why I leave away the prompt before the commands. A newcomer to
>     the command line can't know that it is not part of the command.
>
>     > In the terminal you normally see $ at the point where you type the
>     > command.
>
>     Hmm, that may be the default for Unix machines and it may have been the
>     same for early Linux machines. However a Kubuntu 14.04 terminal has this
>     prompt:
>
>     kubuntu at kubuntu:~$
>
>     and for Xubuntu it is similar:
>
>     xubuntu at xubuntu:~$
>
>     Therefore I suppose it would be "ubuntu at ubuntu:~$" for a Ubuntu system
>     and not simply "$".
>
>
> I think he rather meant that you are supposed to write your commands
> after the ”$”. The fact that there is something before the ”$” doesn't
> matter, since it's different for every distribution, I guess.
> SomeText $ Replace this text with your command
> I think the $ itself is the same in most cases unless you run as root.
> Anyway, it seems to be some kind of defacto standard that you put a $
> ahead of the command so the reader can see that this is a command and
> this is the program output:
>
> $ env x='() { :;}; echo vulnerable'  bash -c "echo this is a test"
> this is a test
> $
>
> The first line is a command, the second line is the output of the
> command and the third line is where you put your next command, right
> after the $.
>

Hi,

I understood it and I'm by no way an expert!!

Pete S


> Johnny Rosenberg
>
>
>
>     Nils
>
>
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