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Old 01-15-2014, 08:16 AM   #1
jyunker
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Registered: Aug 2009
Posts: 167

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unusual response to sudo yum update


Yesterday, I ran some commands to restore permissions of my files on my Centos 6.5, 64 bit system.

I had mistakenly typed chmod -R +w 777. So I needed to restore permissions or reinstall the system.

It seemed to work. The commands can be found here.

http://www.adminlinux.org/2009/07/ho...lt-system.html

I got through it and ran both lines of commands. It works, I am not sure how, but it works.

Now when I came in the morning and typed

Code:
sudo yum update
sudo:effective uid is not 0, is sudo installed setuid root?
I am wondering how to fix this.

Any help appreciated. Thanks in advance.

Respectfully,

jyunker
 
Old 01-15-2014, 08:54 AM   #2
angel115
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Registered: Jul 2005
Location: France / Ireland
Distribution: Debian mainly, and Ubuntu
Posts: 532

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Hi jyunker,

check the permission of your sudo command:
Code:
$ ls -l /usr/bin/sudo
-rwsr-xr-x 2 root root 127668 2013-02-27 21:41 /usr/bin/sudo
It should look like above
if it doesn't log as root and set the right permission:
Code:
$ su -
# chown root:root /usr/bin/sudo
# chmod 755 /usr/bin/sudo
# chmod u+s /usr/bin/sudo
 
Old 01-15-2014, 09:33 AM   #3
jyunker
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unusual response to sudo yum update

I just checked what you said and its resonse:


-rwxr-xr-x.1 root root 123832 ..

It looks like it is correct. What else do I do?

Respectfully,

jyunker
 
Old 01-15-2014, 10:17 AM   #4
angel115
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Registered: Jul 2005
Location: France / Ireland
Distribution: Debian mainly, and Ubuntu
Posts: 532

Rep: Reputation: 78
Hy jyunker,

Nop, the stiky bit is not set:
Your config:
-rwxr-xr-x

The way it should be:
-rwsr-xr-x

Type the following as root should solve the issue:
Code:
# chmod u+s /usr/bin/sudo
Best regrads,
Angel.

Last edited by angel115; 01-15-2014 at 10:19 AM.
 
Old 01-15-2014, 10:40 AM   #5
jyunker
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unusual repsone when running sudo

In order to do that must I run sudo? As I said sudo does not run.

If I do not need to run sudo I guess that will work.

Do I need to run sudo?

sudo chmod ...

Respectfully,

jyunker
 
Old 01-16-2014, 12:51 AM   #6
angel115
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Registered: Jul 2005
Location: France / Ireland
Distribution: Debian mainly, and Ubuntu
Posts: 532

Rep: Reputation: 78
No, do not use sudo command as that doesn't work.
Login as root using the su - command:
Code:
$ su -
password:
# chmod u+s /usr/bin/sudo

Last edited by angel115; 01-16-2014 at 12:52 AM.
 
  


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