Tagged Questions

The sudo command is a program for some Unix and Unix-Like operating systems, that allows a user to execute programs with the security privileges of another user. Typically those of a superuser or the root user.

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0
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2answers
39 views

how to undo sudoers file

I accidently command the root admin and sudo in sudo visduo file. Now with current user it is not rolling it back because i can't access it any more. File does not get opened with command sudo visudo ...
2
votes
1answer
48 views

sudo su “username” vs. su “username”

Please explain me, what is the difference between: sudo su "username" vs. su "username" Which has higher privileges? If I log into root with sudo su "username", I am root for one command only? So it ...
0
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2answers
40 views

sudo cp with wildcard syntax doesn't do anything in Linux

I have a directory containing files that are owned by root, from this directory I wish to copy all the files ending with errorAll to another directory. My wildcard syntax is correct because performing ...
1
vote
2answers
78 views

How to run command without “sudo”?

Nagios on my server isn't working properly. It can't execute command lftp without "sudo". Is there a way how to allow nagios run commands without using "sudo"? My /etc/group: ...
1
vote
1answer
15 views

force sudo to forget password immediately after exit everytime

If I execute sudo su, I am asked for my password ( [sudo] password for ... ) After do some stuff, I can leave this root mode with exit. If I execute again sudo su, I will not be asked for a password ...
3
votes
2answers
49 views

What makes the differences between `sudo CMD` and `sudo su` followed by `CMD`?

I have an SSH server with key only auth and I want to add a key for a new user. I log in with one user(kidmose), I try to append the key to a new user's(remote) authorized_keys and it fails: ...
2
votes
1answer
50 views

OpenWrt: Cannot install package sudo

I have installed the latest OpenWrt Chaos Calmer r42871 on my TP-LINK WR-842ND router. And everything's good except the problem: root@router:~# opkg install sudo Unknown package 'sudo'. ...
0
votes
1answer
23 views

output of sudo -l confusing me

(habdbsync) NOPASSWD: ALL, (habdbsync) !/bin/sh, !/bin/ksh, !/bin/csh, !/bin/tcsh, !/bin/zsh, !/bin/bash, (habdbsync) !/bin/su, (habdbsync) !/usr/bin/ssh, !/usr/bin/scp, !/usr/bin/slogin (root) ...
0
votes
1answer
64 views

su- no password entry for user? installing powerline with pip

I am trying to install Powerline using pip to do the installation. I'm installing in to /usr/local/lib/python2.7/dist-packages/powerline using the su -c "pip install github******" and get the response ...
0
votes
1answer
47 views

Replacement for “su user_with_sudo; sudo -s” for user without sudo-rights?

Let's say I have two user accounts: user (without any sudo permissions) user_with_sudo (with all sudo permissions) Now, I'm logged in as user but want to do something as root, e.g. switch to a ...
0
votes
1answer
94 views

Cannot change the desktop wallpaper in Ubuntu 14.04

I tried installing GNOME packages to Ubuntu 14.04(unity). I used these codes. sudo apt-get install gdm sudo apt-get install gnome-shell sudo apt-get install ubuntu-gnome-desktop ...
0
votes
0answers
34 views

Sudo suddenly not working correctly on OS X?

I have started noticing that commands requiring the use of sudo on OS X Mavericks are failing, e.g. I just updated Meteor and it couldn't write the launcher script sudo cp ...
0
votes
0answers
6 views

How to run a zle widget from an alias

I am using the sudo plugin for oh-my-zsh, which usually is bound to (Esc) (Esc). However, I'd prefer an alias for sudo !!. The plugin actually defines a zle widget, but how can I call this widget ...
0
votes
0answers
27 views

Adding group permissions with sudoers with NOPASSWD still prompting for password

Fedora 20, clean install. I added the following lines to my sudoers file with visudo: %power ALL=NOPASSWD: /sbin/shutdown I then created group "power" and added my account to this group. ...
2
votes
3answers
109 views

Using su - (user) to open privileged port not working

So I wanted to run a Node server on port 80 but I didn't want to run the entire process on root privileges, for security I thought this would be the best. So I thought a good solution would be to use ...
1
vote
0answers
38 views

Is there anyway you can restrict users from executing a command with another name?

I'm not asking an obvious question here. I would like to elucidate with an example. A user 'bob' is always executing 'chmod 777 /home/bob/impfiles' so that user 'alice' could make changes to the ...
1
vote
2answers
63 views

Running Screen after switching users

After switching users (with su) I cannot run screen: % screen -L Cannot open your terminal '/dev/pts/5'. How can I run screen after switching users?
1
vote
0answers
26 views

Can't resume editor running as root

For years, when I have been working over an SSH connection, I will run sudo vi ... to edit a config file. If I need to do something on the command-line, I'll hit Ctrl+Z to suspend the editor, do ...
0
votes
1answer
40 views

sudo ssh asks for passphrase when it shouldn't

I am able to ssh user@remotemachine without password using a keypair with an empty passphrase. However, when I do sudo -u user ssh user@remotemachine it keeps asking for a passphrase. Also sudo -u ...
0
votes
1answer
44 views

Stuck on password even though used --disabled-password option in ubuntu

I created a user in aws ec2 with: ubuntu$ sudo adduser --disabled-password user1 per instructions from: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/managing-users.html After I ssh in as user1 ...
0
votes
0answers
62 views

Script for temporarily disabling internet connection

I want to block internet connection to me for about 8 hours or so on my Linux machine. I have no will power, so simple call for ifconfig down ifconfig up or similar commands doesn't apply to me, ...
0
votes
1answer
54 views

Are there downsides to installing node.js with root privileges?

I'm using the following code to install node: cd /usr/local/src/ wget http://nodejs.org/dist/v0.10.25/node-v0.10.25.tar.gz tar -xvf node-v0.10.25.tar.gz cd node-v0.10.25 ...
0
votes
0answers
19 views

How to restore Debian server's /var/lib datas

I made a big mistake : While administrating and making settings, I accidentally deleted /var/lib folder. The result is that I can no longer use any dpkg commands, so I"ve lost my mysql database. I of ...
0
votes
0answers
27 views

Application not themed when run with gksu instead of sudo

Slightly nitpicky, but when running applications on Linux Mint 17 from a terminal using "sudo", the application gains root privileges and is nicely themed. If I use "gksu" or "gksudo", the application ...
0
votes
0answers
27 views

CentOS 6 Getting Sudo to show the display in a FreeNX session

My platform is a 32-bit installation of CentOS 6.4 with a gnome desktop and the FreeNX server. When I log into an NX session (usually using NoMachine NX Client), and then try to open an application ...
2
votes
3answers
69 views

Why is this sudo command try to run in /root?

I try to run a sudo command via SSH like this: ssh domain.com sudo -u user bash -c "cd /home/user/ && ls" (which is obiously just an example). I get back: /home/user/: line 0: cd: /root: ...
0
votes
0answers
56 views

“qemu-nbd --create” without sudo

I'm working on a custom OS, and the make recipe I wrote for creating a new disk image requires sudo for connecting/disconnecting the virtual HDD image to a /dev/nbdN device. Because I don't want sudo ...
1
vote
1answer
12 views

Disable an #include instruction in sudoers

Can a sudoers #include instruction be disabled with an additional # character? Or rather just delete the leading # character? (I wish I would understand what the sudo developers had on their mind ...
6
votes
5answers
207 views

Preventing malware from sniffing the sudo password

I often hear people citing sudo as one of the main barriers to malware infecting a Linux computer. The most commen argument seems to go along the lines of: Root privileges are required to modify ...
0
votes
0answers
27 views

Fedora 20: sudo hangs in rxvt-unicode

It seems to be an old problem that the sudo command hangs around 10secs before allowing you to enter your password when executing a command: ...
-1
votes
1answer
56 views

alternatives to insecure sudo?

How do I protect my environment from sudo erasing half of it? It seems I can protect variables, but functions that the variables (like the prompt, for example) rely on are undefined. This means that ...
0
votes
0answers
22 views

path setting appears twice in env output

After an OS version upgrade I have the following strange problem: % port MacPorts 2.3.1 ... % sudo -i # port MacPorts 2.3.1 % sudo port sudo: port: command not found Furthermore, if I do it all ...
0
votes
1answer
60 views

ubuntu superuser got corrupted

I was trying to save times to type password for sudo because one of my scripts had to be randomly repeated quite often. I googled some information about how to bypass typing password and applied to ...
1
vote
1answer
19 views

execute script with sudo and check security

I have a script, which I need to execute with sudo. #!/bin/bash cp "$@" /destionation/dir Is it a good script or someone can bypass the restriction destination dir ? Thanks for suggestions.
0
votes
0answers
8 views

Where to add a new sudoer in vCenter?

Currently, in vCenter, I clone new VMs using an Ubuntu 14.04 template and a SimpleLinux customization spec. I now need to add a new user (newuser) and configure it to be a sudoer in /etc/sudoers like ...
0
votes
0answers
25 views

Trying to rsync and use sudo on other end

Scenario: Mac OS X Machine - old computer - user: john.doe Mac OS X Machine - new computer - user: john.doe Goal: Copy /Users/john.doe/Desktop and /Users/john.doe/Documents via rsync Problem: ...
-1
votes
2answers
45 views

trying to login automatically into a server using sudo ssh cmd in script [closed]

I am new to Shell scripting. I want to login to a server using a script. The normal command I use is --> sudo ssh . when i tried putting this into a txt format file and tried running, it throw an ...
0
votes
1answer
96 views

sudoedit: why use it over sudo vi?

According to the man page: sudoedit /etc/file creates a copy of the file, opens it as the current user, and when saved overwrites the existing file with the copy. whereas sudo vi /etc/file ...
0
votes
1answer
71 views

TC command via webpage as a sudo

The main goal- run a tc command via webpage, starting with: tc qdisc del root dev eth0 (deletes all the filters) Following Simple linux commands from a webpage I am trying to add a tc command, but ...
0
votes
0answers
31 views

Broken sudo commands

How to repair sudo to use standard commands? I cannot use any command with sudo.
1
vote
0answers
104 views

How can I redirect OS X dtruss output when running with sudo?

I'm running dtruss on Mac OS X 10.9. Simple example is: sudo -c ls But I'd like to capture the dtruss output into a file. I saw something that suggests that I can do something like: sudo bash -c ...
5
votes
4answers
212 views

Terminal: prefix previous command?

Frequently in Terminal (though I fully expect any answer will work in bash and most others), I type some command, and then get some sort of permission error due to missing sudo. Okay, so press 'up', ...
1
vote
0answers
4k views

sude gedit Gtk-WARNING **: cannot open display:

I have a VPS on which I am attempting to install pure-FTPd via a root SSH account on a remote machine. I have already installed gedit and have gotten to the stage where I need to edit a config using ...
0
votes
0answers
31 views

sudoers: allow users to remove from their home directory

I'd like to add a sudoers rule that says users are allowed to remove files from their home directory , but I don't see any way to limit arguments to be a subdirectory of the users' home. Is there any ...
1
vote
1answer
54 views

Why does a double sudo modify permissions?

Context: sshed into an AWS t1.micro instance running Amazon Linux 2013.09, using the default ec2-user. I'm trying to list the contents of the default postgresql directory: What's in there? $ ls ...
23
votes
5answers
2k views

Sudo vs root; any actual differences?

I'm working with a support member for a product, and he insists that I need to be root to install a series of patches, and that sudo won't work; he doesn't provide a reason but seems very firm in his ...
0
votes
1answer
104 views

Permission denied on sudo remove

I have two users userA and userB. userA has permission over a file named cache. I want to give permission to userB to remove the file. I have made following entry in /etc/sudoers file : userB ...
1
vote
3answers
65 views

Add a sudoer non-interactively from command line

(On Centos through Docker) I know that I can add a sudoer using visudo. Is there a way to add a user to the sudoer list straight from the command line, so I don't have to do it interactively? I'm ...
2
votes
2answers
109 views

Security risks using SUDO in TERMINAL on MAC

I'm very new to using Terminal and anything like that and stupidly followed an article that uses Terminal with the SUDO command. The sudo command basically loaded a file which updated my ...
2
votes
2answers
170 views

Issue with environment variable

Please help me running below command from user2 account. I cannot figure out what's the issue with this. [user2@localhost bin]# sudo -u user1 /opt/Tomcat/bin/shutdown.sh Neither the JAVA_HOME nor the ...