/proc/sys/kernel/shmmax

[Gérard BIGOT]

On Jan 21, 2008 9:18 PM, Nils Kassube <kassube at gmx.net> wrote:

> Gérard BIGOT wrote:
> [Instructions how to become root]
>
> Thank you for your effort to explain how to become root. But, sorry, it
> seems we were'nt talking the same language. I do know how to become root
> and how the prompt might look like. I just don't think it is obvious that
> a command should be used with sudo, if there is only a '#' as an
> indication. Probably I should have written it more precisely.
>
> > $  : You
> > # : The root account.
>
> OK, that looks nice, but is it really that way with Ubuntu? I didn't know
> because I usually change the prompt according to my preference (e.g. red
> background for root). Therefore I started Kubuntu 7.10 Live CD. The
> prompt is "ubuntu at ubuntu:~$" for the normal user
> or "root at ubuntu:/home/ubuntu#" for root. I think it looks the same after
> a normal installation. So, the '#' or '$' seems to be only the last
> character of the prompt.

It's the persistant part of the prompt.

>
>
> > That's why they give the # at the beginning of the command line. It
> > means 'it's supposed to be run as root'. And the way to do it in Ubuntu
> > is to add sudo at the beginning of the command.
>
> And that's what I think isn't useful. If somebody asks for a command on
> the list, it should not be expected that he sees or even knows the little
> difference between a '#' and a '$' in front of the real command. If I
> tell someone a command which should be run as root, I would either
> write "sudo some command" or I would mention that it should be run in a
> root shell.
>

Let me explain things here.  Ubuntu changed the traditional way to deal with
the root account by locking it. And by providing a way to acquire temporary
root rights (sudo). It's a clever and creative way. But it's a change
nevertheless.

All the other distribs (even debian), use root normally. There's more chance
for a documentation to be written for another distrib than for debian . You
need to be aware of this distinction.

I see the ubuntu new way to do this making progress in its awareness. But
you can't change more than 50 years of tradition.

Sorry, I feel like a dinosaure to know this.

I'm going back to my (evolutionnary) museum....

G.
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