What is the difference between "su" and "sudo" ?
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From: pk on 30 Dec 2009 14:04 Randal L. Schwartz wrote: >>>>>> "Matthew" == Matthew Lincoln <kmlincoln100(a)hotmail.com> writes: > > Matthew> at is the difference between "su" and "sudo" command ? > > The simplest difference is that "su" uses the *new* users password, while > "sudo" uses the *original* users password. This alone means that you > don't have to have a shared secret password for root, for example. On > some boxes I administer, root doesn't even *have* a possible password. True, however sudo can be configured to request the root password rather that the user's password. That said, I haven't seen such a setup used in practice.
From: Chris Cox on 30 Dec 2009 14:27 Matthew Lincoln wrote: > Sorry for this newbie question: > > at is the difference between "su" and "sudo" command ? sudo is a more flexible and feature full way of doing something as another user. Has more options allowing for things like executing only specific commands, executing things without password, etc. It's closer to allowing role based security. su is pretty basic.
From: Ben Finney on 30 Dec 2009 15:18 kmlincoln100(a)hotmail.com (Matthew Lincoln) writes: > at is the difference between "su" and "sudo" command ? What questions remain after reading the man pages 'su(1)' and 'sudo(8)'? -- \ “Faith, n. Belief without evidence in what is told by one who | `\ speaks without knowledge, of things without parallel.” —Ambrose | _o__) Bierce, _The Devil's Dictionary_, 1906 | Ben Finney
From: Robert on 30 Dec 2009 17:32 On Wed, 30 Dec 2009 18:15:21 +0000, Matthew Lincoln wrote: > Sorry for this newbie question: > > at is the difference between "su" and "sudo" command ? 'su' - You assume the users rights 'sudo' - User is allowed to execute a command in accordance with what is listed in sudoers. -- Regards Robert Linux User #296285 http://counter.li.org
From: Ryan McCoskrie on 30 Dec 2009 17:37
Matthew Lincoln wrote: > Sorry for this newbie question: > > at is the difference between "su" and "sudo" command ? > It's (mostly) a matter of the defaults. By default su gives you a session as another user unless given the -c switch, in which case it runs one command as another user. With sudo you need to use the -i to have a whole session as another user rather than just running one command. There are other differences but that's the major one. -- Quote of the login: A bug in the code is worth two in the documentation. |