5
votes
1answer
175 views

No password to run command as root for fixed command? [duplicate]

Is it possible to define a rule in sudoers to allow one user to run one well defined command as root, without password or other authentication except being the right user? Are there alternatives to ...
1
vote
4answers
78 views

How to correctly enable sudo for user in Fedora 20

I followed this question in order to enable sudo command for my created user. So I added it into the wheels group and edited the /etc/sudoers file accordingly. But what I don't get about this is when ...
5
votes
1answer
327 views

I changed /etc/sudoers, and now I can't run as sudo

I messed around with the sudoers file without really knowing what I was doing using this link. Assume I did everything that was in the top answer along with editing it with vim and not visudo. How do ...
2
votes
0answers
8 views

Why does xdg-open text_file differ from sudo -u me xdg-open text_file?

If I run the following command, the text file opens in my preferred editor (kate). $ xdg-open text_file However, if I try the following, where sparhawk is my username, I get several warnings, and ...
2
votes
1answer
417 views

Vim Error E138: Can't write viminfo file $HOME/.viminfo!

I'm afraid I've run into something rather strange. When I open a file normally, vim README.txt, everything is fine. But upon sudo vim README.txt, the file renders blank, and gives me a E138: Can't ...
0
votes
0answers
46 views

Debian wheezy using gnome classic requires root for system modifying changes

I am using Gnome classic on Debian Wheezy, and I sometimes get a popup for package updates. The UI prompts for a root password, and will only accept root. Is there some way for me to add my account to ...
2
votes
1answer
61 views

Root Password Policy and Refresh

Unfortunately the infrastructure I work in has static root passwords that are very rarely refreshed. So people leaving the company will have our root passwords and it can potentially be leaked to ...
3
votes
2answers
224 views

I'm not getting privileges, edited /etc/sudoers [duplicate]

I want to run any program without asking root password. Because I'm the only person who use the system. So I googled and edited /etc/sudoers. What I did: # chmod 640 /etc/sudoers # vim /etc/sudoers ...
4
votes
2answers
74 views

System Crontab or Root Crontab

System crontab: /etc/crontab Root crontab: sudo crontab -u root -e Which way is preferred? As they all run tasks within administration privilege.
1
vote
1answer
121 views

How to execute changes on remote server as root?

I'm wondering if there is a way to execute a script/commands from the the local machine without making any modifications as root on the remote machine? Some background I'm trying to setup some tasks ...
1
vote
2answers
216 views

How does sudo really work? [duplicate]

This question might be stupid, but I am unable to answer it myself. I always thought that "sudo" just starts another login-process, specifically using "root" as a username and asking for the Password ...
5
votes
1answer
161 views

Enable superuser when logged in with another user

Suppose that the machine has two users: Alice (admin) Bob (standard user) While Bob is logged in, how can Alice modify a root file (Bob does not have this permission even with sudo)? Alice tried: ...
0
votes
1answer
336 views

(CentOS-6.5) How to implement GNOME environment privilege escalation like GKSUDO?

How would I implement a GKSUDO -like privilege escalation control on CentOS 6.5 workstations? (standard GNOME config, x86_64 and i386) I do not want to share the root password with users, and some of ...
0
votes
0answers
33 views

Installer tries to run sudo for root access

I downloaded Mac4lin from http://sourceforge.net/projects/mac4lin/ I proceeded by following steps 1.Extracted ZIP file. 2. ./Mac4Lin_Install_v1.0.sh it producing following output [Admin@localhost ...
0
votes
1answer
110 views

Non root user performing root actions without sudo/ SetUID in shell script limitation

If I have a script that does some root actions called /sbin/root_stuff and I wanted user bob to have this script run as his shell when he logs in via SSH, I know I can set his shell to a script that ...
1
vote
1answer
62 views

super user group or user?

I am using the following command in Oracle Exadata: sudo su - odiadmin As sudo prompts for my own password, I am wondering if I upgrade myself to super user or do I switch to superuser ...
3
votes
1answer
119 views

Some software runs only by root terminal

I'm facing this odd situation here, programs such as gparted, furiusisomount and Rstudio never run by clicking on their icons in the applications menu or by running them with terminal as a normal ...
0
votes
1answer
100 views

Change sudo and root password on Debian

I have sudo access, but I don't remember the sudo or root password; how do I change it from my limited account using sudo?
1
vote
2answers
548 views

Why does this ssh command not work? (cat ./file | ssh <user@host> “cat | sudo -t -t 'cat > /root/location/file'”)

I'm trying to do the following but it's not quite right. cat ~/Desktop/blah.png | ssh -t -t trusktr@50.116.4.56 "cat | sudo -i 'cat | /path/to/blah.png'" I have my public ssh key in the ...
7
votes
2answers
228 views

How do I edit a file as root?

Are there any special considerations to editing a file as root? What is the safest way to do this?
-1
votes
1answer
301 views

How to install sudo package in Unix? [closed]

I'm new to this sudo command. I needed to do sudo mount -o remount. But it is giving me the following message sudo: unable to stat /etc/sudoers: No such file or directory sudo: no valid sudoers ...
0
votes
0answers
19 views

file owner not able to renounce the ownership to root? But root can! [duplicate]

I logged in as username 'ravbholua' I created a file bb as below: ravbholua@ravi:~/Pictures$ echo>bb ravbholua@ravi:~/Pictures$ ll total 12 drwxr-xr-x 2 ravbholua sudo 4096 Oct 13 11:18 ./ ...
3
votes
2answers
414 views

difference between windows local admin and unix root

I am trying to understand what is a conceptual difference between unix root account and windows local admin. I am a developer and despite IT department efforts were always given local admin rights so ...
3
votes
2answers
939 views

Difference between root account and administrative account

If a user with administrative privilege can have all the powers of root using sudo , then what is the advantage of having root account?
3
votes
1answer
591 views

Can edit file as root, but not using sudo

I just faced a really strange situation. I was trying to edit file /usr/lib/thunderbird/thunderbird.sh, which has the following permissions: $ ll /usr/lib/thunderbird/thunderbird.sh -rwxr-xr-x 1 ...
1
vote
2answers
10k views

How to properly configure sudoers file, on debian wheezy?

I have seen many blog posts that say, it is enough to do aptitude install sudo su root adduser USERNAME sudo But that only protects aptitude, in other words: aptitude install sendmail will ask ...
1
vote
3answers
99 views

Is there any way to disable shutdowning remote machine?

I sometimes mistakenly shutdown the remote machine by using sudo init 0, so I wrote something like in one of my rc files: alias sudo='sudo ' if [ $SSH_CLIENT ]; then alias init 'echo Never use init ...
0
votes
1answer
86 views

rsnapshot LVM without root

I'd like to cron a local backup to a locally mounted USB drive. I'm using rsnapshot and want it to back up an LVM snapshot onto the USB drive. But, unless I run the cron as root it complains that I ...
3
votes
1answer
580 views

Poweroff or Reboot as normal User

To run the command poweroff or reboot one needs to be super user. Is there anyway I can run this as a normal user? I just don't want to sudo and enter my password every time I reboot or power off.
0
votes
1answer
112 views

Are there any Linux distros that protect against “self-mutilation”? [closed]

Over the past week I have installed and reinstalled Linux several times (Mint 15 in all but one case; Ubuntu 13.04 is too slow on my laptop), and after a mishap with QT today I completely gave up in ...
44
votes
3answers
2k views

How do the internals of sudo work?

How does sudo work internally? How is it possible that it can become root without having the root password, unlike su? What syscalls, etc. are involved in the process? And why is however sudo does it ...
3
votes
1answer
304 views

sudo command executes without prompting for password

For some reason, I suddenly do not need to enter the password when issuing sudo some_cmd. Entered command just runs without ever prompting password, even if I am not logged in as user root. Commands ...
-1
votes
1answer
163 views

How do i change the password for root using webmin, where i have no more access as root?

I changed the root password, using webmin it shows me successfully done. $ uname -a Linux .com 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 05:04:09 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux $ echo -e ...
1
vote
1answer
867 views

Running program as root without using sudo with normal user account

Is there a way to force to run program as root (with normal user) when there's no sudo on the machine (and can't be added)?
2
votes
2answers
310 views

Command added to visudo still is failing on permissions?

My sudo file has two commands in it right now that are allowed to run without logging in as root. It looks like this: user ALL=(root) NOPASSWD: /home/user/prog1.py user ALL=(root) NOPASSWD: ...
2
votes
3answers
2k 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 ...
10
votes
4answers
8k 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
195 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
623 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
2k 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 ...
2
votes
1answer
329 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 ...
4
votes
1answer
14k 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
48 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
2k 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
260 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
310 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 ...
7
votes
2answers
7k 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 ...
16
votes
4answers
1k 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
2k 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
2k 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 ...