Gentoo Archives: gentoo-user

From: pk <peterk2@××××××××.se>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] KDE and permissions problems
Date: Sat, 17 Mar 2012 13:12:53
Message-Id: 4F648D68.4040008@coolmail.se
In Reply to: [gentoo-user] KDE and permissions problems by Dale
1 On 2012-03-17 11:19, Dale wrote:
2
3 > The program 'su' could not be found.
4 > Ensure your PATH is set correctly.
5
6 What does 'echo $PATH' give you? /bin should be in your path (that's
7 where 'su' is located, or should be)... My $PATH looks like this:
8 /usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.3:/usr/games/bin
9
10 I don't know if this is the case but maybe, you're using some of the
11 new-fangled screw up'ed tools like, dracut, systemd etc. that wants to
12 move everything into /usr (on the same partition as /) and as such
13 changes your $PATH accordingly (without checking perhaps - which would
14 be consistent with the arrogance of the coders).
15
16 > -rws--x--x 1 root root 36680 Mar 16 23:36 su
17 > -rws--x--x 1 root root 52416 Mar 16 23:19 umount
18 > -rws--x--x 1 root root 42592 Mar 16 23:36 passwd
19
20 The 's' part is for the SetUID bit which gives the root-owned command in
21 question root privileges, in order to switch user... See:
22 http://blog.superuser.com/2011/04/22/linux-permissions-demystified/
23
24 (esp. the "Getting sticky!" chapter).
25
26 That's not all though...:
27
28 > it, then what? I am in the wheel group. I'm also in the tty group.
29
30 Check your /etc/pam.d/su file... it should contain (at least) this line:
31 auth required pam_wheel.so use_uid
32
33 That's what gives you permission to use 'su' as a member of the 'wheel'
34 group ('su' is controlled by 'pam').
35
36 Best regards
37
38 Peter K

Replies

Subject Author
Re: [gentoo-user] KDE and permissions problems Dale <rdalek1967@×××××.com>
Re: [gentoo-user] KDE and permissions problems "Bruce Hill