"sudo rm ..." reports "Operation not permitted"

irissun · 10-14-2018, 08:34 PM

Quote:

Originally Posted by pan64

I would say root has no right to use sudo, but probably I missed something.
as root there is no need to use sudo.

Yes, root is no need to use sudo normally.
The issue is that the "sudo" is in a script. The script will be ran by root and also some other non-root user sometimes.
The current issue is that when root ran the script, it failed in the "sudo" part, in that specific machine, while it works fine in my lab. I want to check and know what kind of configurations in that machine caused that.

ondoho · 10-16-2018, 01:00 AM

please do the following starting as normal user:

Code:

cd /tmp
touch asdf
ls -al
lsattr
rm asdf
sudo rm asdf
su -
cd /tmp
touch asdf
ls -al
lsattr
sudo rm asdf

one could probably expand that test; we just need to get a better picture of what's going on here.
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Quote:

Originally Posted by irissun

Yes, but changed a little to remove machine specific stuff.

have you also carefully compared versions of sudo, and differences in the sudoers files, and lastly permissions of the end result?
i'm pretty sure sudo will balk if sudoers doesn't have the exact right permissions.

fwiw, on my system it's:

Code:

-r--r----- 1 root root 3.2K May 17 07:18 /etc/sudoers

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btw, i'm with one of the previous posters: if you're already root, you don't need sudo.

Quote:

Originally Posted by irissun

The issue is that the "sudo" is in a script. The script will be ran by root and also some other non-root user sometimes.

you can script that, too: check the current user id, and don't use sudo if it's 0.