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Full Discussion: su (-) command
Top Forums UNIX for Advanced & Expert Users su (-) command Post 27747 by PzYon on Friday 6th of September 2002 05:54:23 AM
Old 09-06-2002
su (-) command
With the su command you can switch to any user on system, if you know his password.. Example: "su - root" switches to the root user.
This way the profile of the user (here root) will be loaded and you will get the rights of root. But if you enter "su root" (without "-") you just get the rights of root, but you don't actually load his profile..
Now I need a way, so that the user can't use the command without the "-". Example: "su - root" is possible and "su root" should not be possible!
Has anybody got an idea, how I can solve this problem?
 

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LEARN ABOUT DEBIAN

su-to-root

su-to-root(1)						      Debian GNU/Linux manual						     su-to-root(1)

NAME

       su-to-root - A simple script to give an `interactive' front-end to su.  It can be used in menu entry commands to ask for the root password

SYNOPSIS

       su-to-root [-X] [-p <user>] -c <command>

DESCRIPTION

       Most  menu  entries  simply  start an editor or a game or whatever. But some menu entries would like to give the user the ability to change
       important settings in the system, that require root privileges.	su-to-root can be used to ask for the root password.

OPTIONS

       -c <command>
	      The command to execute as a string. This option is mandatory.

       -p <user>
	      The name of the user to change to, instead of root.

       -X     The command is a X11 program that does not require a terminal.  This is to be used with menu entries that declare needs="X11".

ENVIRONMENT

       SU_TO_ROOT_X
	      Select the su-like program called by su-to-root -X.  Supported values are gksu, kdesu, kde4su, ktsuss,
	       sux, gksudo and kdesudo.  kde4su denotes the KDE4 version of kdesu.

	      When this variable is not set su-to-root will currently try to use gksu, kdesu, kde4su, ktsuss, sux and the built-in code,  in  that
	      order with the exception that under a KDE session, kdesu and kde4su are prefered over gksu.

	      The exact set of programs to try and their order is subject to change without notice.

       SU_TO_ROOT_SU
	      Select the su-like program used in text mode.  Supported values are sudo, sux and su, the later being the default.

FILES

       /etc/su-to-rootrc

       ~/.su-to-rootrc
	      su-to-root will source these files at startup in this order. This lets you define and modify the environment variables above without
	      restarting your X session.

COPYING

       su-to-root is distributed under the GNU General Public License.	(GPL 2.0 or greater).

AUTHORS

       Joost Witteveen <joostje@debian.org>

       X11 support by Morten Brix Pedersen and Bill Allombert <ballombe@debian.org>

SEE ALSO

       update-menus(1), menufile(5), /usr/share/doc/menu/html

Debian Project							  20 October 1998						     su-to-root(1)
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