Tagged Questions
-1
votes
1answer
30 views
disabling root permissions [closed]
From Linux From Scratch build a minimal system for running my application. but struck on disabling root permission.
Need my minimal lfs as ubuntu.
when ubuntu boots login-screen displays when we ...
1
vote
3answers
192 views
Using sudo in openSUSE without actually changing to root user (i.e., like in Ubuntu)
I recently started trying openSUSE 12.3 after having used Ubuntu for a few years. I'm still getting used to openSUSE's treatment of su (and sudo) vs. Ubuntu's use of sudo. I've been reading the ...
9
votes
4answers
705 views
Why doesn't “sudo su” in a shell script run the rest of the script as root?
A sample script can be as below:
#!/bin/bash
sudo su
ls /root
When using ./test.sh as the normal user, instead run ls as super user and exit, it switches to root; and when I logout, it executes ls ...
3
votes
1answer
73 views
How does having /dev/fd make running shell scripts under sudo safe?
At the end of the man page for sudo, there's the following remark:
Running shell scripts via sudo can expose the same kernel bugs that
make setuid shell scripts unsafe on some operating systems ...
0
votes
3answers
96 views
What does sudo su work but su does not? [duplicate]
I have tried this on Fedora and on Ubuntu.
kshitiz@kshitiz:~$su
su: Authentication failure
kshitiz@kshitiz:~$sudo su
root@kshitiz:/home/kshitiz#
I am entering the same password in both the cases.
...
0
votes
2answers
125 views
Changing root password does not change sudo password
I'm trying to change the password that get's asked when doing sudo.
I'm in Ubuntu.
Doing 'sudo passwd' or 'sudo passwd root' does give me the two new password questions, and it successfully changes ...
1
vote
1answer
106 views
Setting the root password vs. sudo -i
Should one always set a root password, or is sudo -i acceptable? Two problems is in reading other posts (maybe junk I realize):
sudo -i eliminates the need for a password. Isn't that a problem for ...
3
votes
1answer
2k views
Suddenly, I Can't login with correct password (greeter & tty)
This might be a duplicate of other password related questions but it's somehow eccentric.
I have 3 accounts in my Ubuntu 12.10 system (one standard and two administrators). One of the administrator ...
0
votes
0answers
43 views
Root user can't do everything? [duplicate]
Possible Duplicate:
Redirecting stdout to a file you don’t have write permission on
I'm quite new to Linux and I have a permissions questions. I'm using Linux Mint.
If I go to /opt and do ...
2
votes
3answers
798 views
Run local scripts on multiple servers using sudo user through a script
I have about 100 remote servers. I want to manage all my servers using one terminal server to update , run commands with sudo privileges.
I need to have one main script that takes another test script ...
5
votes
3answers
181 views
Are sudo and gksudo safe?
I noticed after running a sudo command in terminal or running a administrative application that uses gksudo, it won't ask again for the password for a time (something like 5 minutes).
Now let's ...
2
votes
2answers
195 views
Finding root password
I installed a Ubuntu and it only has a user. I can login to the system without login. It doesn't ask me for un/pwd. but when I am in, and I want to run some commands as root (sudo), it ask for ...
3
votes
2answers
1k views
How do I find out if I am sudoer?
How does Linux system behave when I am not sudoer?
Here is what happens if I try to use sudo:
server:/tmp>$ sudo cal
[sudo] password for user:
Sorry, try again.
Is it possible that I just don't ...
12
votes
4answers
599 views
How universal is sudo?
I was writing some instructions on how to install something (TeX-related - if you don't ask, I won't ruin your day by supplying more details) and used sudo to install system-wide. Someone commented ...
1
vote
3answers
710 views
Root permission - username ALL=(ALL) ALL does not work
I'm a beginner.
I'm trying to give my user root permissions, so I edited the sudoers file like this:
black ALL=(ALL) ALL
"black" is my username.
But I still don't have root permissions, and ...
2
votes
2answers
837 views
SFTP and sudo using Windows client?
I want to download files from a linux system using a windows client. While there are many SFTP clients I am having the problem, that I need to access files where I need to be root. On the linux system ...
2
votes
2answers
209 views
Kubuntu - GUI context menu sudo/root
A couple of years ago I found something in a package manager that added a context menu item that allowed me to open files and save them normally without being harassed about file permissions. Can ...
1
vote
1answer
356 views
exclude commands from user's sudo permissions
Consider the following line in a /etc/sudoers file:
username ALL=(ALL) ALL, !/usr/bin/passwd
as far as I know, this allows user username to use sudo, unless he not uses /usr/bin/passwd. But ...
1
vote
2answers
624 views
Problem with vim when logged in as root
When I login as root or edit a file by sudo mode all of the options in my /etc/vimrc are not working (e.g. highlight line-number etc.)
1
vote
1answer
1k views
switching from user to root and revers (freebsd)
i want to make some modificaciones with root and then with my user, in fact i want to install sudo and he give me the error in the first step:
cd /usr/ports/security/sudo
make install clean
...
19
votes
1answer
1k views
How to get root inside of vi? [duplicate]
Possible Duplicate:
Becoming root from inside Vim
It could happen to anyone. The admin types:
vi /etc/resolv.conf
as a regulare user. He edits the /etc/resolv.conf file, but when he ...
1
vote
1answer
253 views
How to invoke root privileges from my custom app?
In a GUI-environment, I want to be able to ask the user for the root/sudo password and then execute an app that requires root privileges from within my app.
As an example, say I want to run an editor ...
0
votes
0answers
294 views
Why do you need sudo for “sudo su root”? [duplicate]
Possible Duplicate:
When do su and sudo use different passwords?
Why do you need to use sudo su root ? Why won't it work to just use su root?
5
votes
1answer
3k views
How to run a GUI program as a different user (Debian)?
Using a terminal, I can change the running user with su and sudo — but how can I do that by clicking on an icon/shortcut on the desktop/start menu?
If I have to be root to execute I will be asked ...
4
votes
4answers
731 views
How sudo/root-ness detection works
Programs that make changes system-wide require sudo unless I am already the root user.
Now, the question is: how exactly does the system figure out that I am (not) root?
Does it:
Check to see if ...
4
votes
2answers
6k views
How to get back sudo on Ubuntu?
I have done this:
sudo chown -R myname /usr/
and now I can't use the sudo command because of this error:
sudo: must be setuid root
And as I read this means that the owner of this file ...
2
votes
3answers
3k views
Ways to execute shell command as root?
I'm developing an application that will run on an Amazon EC2 instance, and execute certain commands that require root access. The problem is that different VM's give root access in different ways. ...
3
votes
5answers
286 views
Any program like `sudo` to gain root by having two users enter a password?
I run a server which is used by a group of individuals for e-mail, mailing lists, personal web homes etc.
I thought about ways to provide root access for other members to allow them handling problems ...
14
votes
3answers
4k views
How does sudo work?
I've tried messing around with configuring sudo before, but I haven't had too much luck with it. How is it different from su -l -c "x"? It seems that via the configuration file, one can make it so a ...
28
votes
4answers
1k views
Becoming root from inside Vim
Sometimes I start editing configuration files in /etc using Vim, but forget to use sudo to start Vim. The inevitable result then is that after finishing my edits I encounter the dreaded notice that I ...
6
votes
7answers
761 views
Negatives/downsides of Ubuntu's no-root sudo setup
By default, Ubuntu does not create a root account that the user can login to. Instead users use sudo when they need to perform actions that require administrative access.
Obviously, the people at ...
5
votes
2answers
2k views
Write to a file without redirection?
I am writing a regular compiled application that needs to create a special file and write a magic cookie into it. I can’t write the file directly from the application, the system security model ...
0
votes
1answer
1k views
Debian 6.0 RC1: Cannot login as root and user is not a sudoer
After installing Debian 6.0 rc1, I can't do anything as administrator because I cannot login as root (but I did setup the password during installation) and user is not a sudoer either.
Did I miss ...
24
votes
5answers
6k views
How do I run a command as the system administrator (root)
I need to run a command with administrative privileges. Someone said I should run a command as root. How do I do this?
