Re: Difference entre "su" et "su -"

[Eric LeBlanc <inouk@igt.net>]

(pour les archives)

man su:

[...]
DESCRIPTION
su  is  used  to  become another user during a login session. Invoked
without a username, su defaults to becoming the super user.  The optional
argument - may be used to provide an environment similiar to  what
the user would expect had the user logged in directly.
[...]

sur google.com, j'ai tape: difference su "su -" unix

premiere page: http://www.itworld.com/nl/unix_sys_adm/01232002/

[...]
The basic difference between the "su" and "su -" command, as most of you
probably know, is simple. When the hyphen is used as an argument, not only
do you adopt the identity of the particular user, but you adopt his
working environment as well. The user's "dot files" are read and
processed. Since root often has a much more restrictive environment than
normal user's, you can expect a much more restrictive search path and a
paucity of aliases simplifying or modifying the way that familiar Unix
commands are issued. Therefore, when you "su -" to the root account, you
acquire the more carefully controlled and generally conservative
environment.
[...]

En francais: il execute l'environnement pour le root (les .cshrc/.bashrc
et les /etc/profile ou /etc/csh.cshrc avec les conditions pour root).

Voila!

E.
--
Eric LeBlanc
inouk@igt.net
--------------------------------------------------
UNIX is user friendly.
It's just selective about who its friends are.
==================================================

On Thu, 24 Apr 2003, David CABATON wrote:

> Je viens de m'apercevoir que la commande "su" et "su -" sont differentes....
>
> J'ai cherché de la doc sur le net, j'arrive pas à comprendre, tout le
> monde ne dit pas pareil....
>
> Votre avis SVP pour m'eclairer... :)
>
>
> Merci / David
>
>
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