Questions related to the sudo command that allows users to run programs with the privileges of a different user (normally the root user).

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3
votes
1answer
74 views

Suddenly can't run sudo

I didn't do anything on the computer except Internet for a few days and suddenly when I tried to do: $ sudo apt-get update I got: sudo: effective uid is not 0, is /usr/bin/sudo on a file system ...
3
votes
1answer
65 views

Can't start program without using sudo

I have monodevelop 5.7 installed on my computer with ubuntu 14.10, but when I tried run it from launcher and from the command ~$ monodevelop they didn't work. But when I used the command ~$ sudo ...
3
votes
1answer
2k views

What causes “pam_unix … conversation failed” in auth.log

There are thousands of entries in my auth.log like this: sudo: pam_unix(sudo:auth): conversation failed What causes these to occur? I'd like to fix whatever it is but I'm a bit mystified as to ...
2
votes
1answer
58 views

apt-get update fails in Ubuntu 14.04 due to GPG Error

I am currently on Ubuntu 14.04 (new to Ubuntu, migrated recently). 'apt-get install' works fine, and my connection is working fine as well. But when I run apt-get update, this is what happens 100% ...
2
votes
1answer
80 views

How to find out which programs are taking up alot of memory?

I've been getting messages that I have exceeded my quota limits. I am new to Linux and am not sure what to do. With windows, I could easily just go to Control panel, add/remove programs, and uninstall ...
2
votes
1answer
158 views

Ubuntu no longer prompts for root privilege (but doesn't give it either)

So on 14.04 LTS I was playing around with some settings to solve another problem, and somehow managed to screw things up and now Ubuntu no longer asks for root privileges before trying to perform ...
2
votes
1answer
693 views

Permission denied error after SSH login

I am having Permission denied errors after logging with non root user (which has permissions to do "sudo -i" command). I get these errors: -bash: /bin/uname: Permission denied -bash: [: =: unary ...
2
votes
1answer
2k views

sudo: unknown uid xxxxx: who are you?

I was using ssh and trying to upgrade a system from Ubuntu 10.04 to 12.04. The connection had an issue so I had to login again to finish the upgrade. After running sudo dpkg --configure -a that was ...
2
votes
1answer
98 views

Aliased rm, how do I also alias sudo rm

I aliased rm to a echo use del or full path to rm to save myself from accidental rm (just lost my $HOME to it). But sudo rm still uses /bin/rm. How can I alias it to also print same message? PS: del ...
2
votes
1answer
88 views

Updater is not upgrading

I am using Ubuntu 12.10. I tried to upgrade it using the Software Updater, but it is not working even after pressing Upgrade button. Then I tried to upgrade through the terminal using the command sudo ...
2
votes
1answer
129 views

How to clean up aftermath from rookie ubuntu command

Here are the commands I regretfully run: sudo chgrp root /usr/bin sudo chgrp root /usr/local I had recently added a user to root group and because my user still did not have write permissions, I ...
2
votes
1answer
134 views

Why my gnome terminal is set to root by default?

When I try to open up a new terminal in Ubuntu to do some operations, it always defaults to an admin based terminal with [sudo] password for xxxxxxxx: $ I need a regular terminal. How do I do this? I ...
2
votes
1answer
903 views

Unable to open Update manager or Ubuntu tweak

I cannot open Update manager and Ubuntu Tweak when I open Ubuntu tweak I get this log user@laptop:~$ ubuntu-tweak Traceback (most recent call last): File "/usr/bin/ubuntu-tweak", line 124, in ...
2
votes
1answer
319 views

Is there a GUI to `visudo`?

Quite simply, is there a GUI to visudo I can recommend to other users, and use for myself? I have to set up a system where over 50 users have different sudo privileges and I need to juggle them all.
2
votes
1answer
86 views

Allow any user to use shutdown with my own shell

First of all sorry if my english is not excelent but it isnt my native language. I have a project where I'm building my own shell (named MYSHELL). One of the tasks is to create my own built-in ...
2
votes
1answer
57 views

Is it possible to run an application as superuser within boot without input?

I have an Ubuntu 12.04 Desktop machine running as a server with no input devices accessible after initial setup. I need to place any application that I want to run within the boot process. I have one ...
1
vote
1answer
29 views

launch ipython but not like root

ipython is launched like root (UID); ok, but I need that after ipython cann't run and don't allow, script/code that can gain root privilegies. eg I launch ipython, ok the UID is root. And in my ...
1
vote
1answer
43 views

mv: cannot move ‘/etc/default/keyboard.tmp’ to ‘/etc/default/keyboard’: Operation not permitted

I run: sudo mv /etc/default/keyboard.tmp /etc/default/keyboard I get this error: mv: cannot move ‘/etc/default/keyboard.tmp’ to ‘/etc/default/keyboard’: Operation not permitted How to fix this ? ...
1
vote
1answer
353 views

Running Composer without using sudo (tried changed owner and permissions)

Every time I run composer (e.g., sudo composer install, sudo composer self-update etc.) I need to run this with sudo as the owner of the file is root. However every time I use the composer with sudo ...
1
vote
1answer
142 views

cannot use sudo after using sudo passwd root

My System problem detected when I tried sudo passwd root in my ubuntu. I changed my root password by using the below command. sudo passwd root Now my system password changed, after this i could ...
1
vote
1answer
91 views

how to create admin account as a duplicate root account for telnet and disable root login over network?

I've been searching for the answer to this but all I find is "It doesn't work". I am a new, yes. I am still a student and i still learn about it. I am happy to break my OS and format it many times if ...
1
vote
1answer
234 views

SU setgid: PERMISSION DENIED, SUDO: PERM_ROOT 0, -1, 1 PERMISSION DENIED

Hi I have a problem that I cannot solve. I cannot log into root, su, or sudo. Everything works fine via ssh so I tried on ssh via putty: Set root password: sudo passwd Add user to sudo/admin ...
1
vote
1answer
69 views

Can not excute commands with sudo

I forgot Ubuntu user password, after referring articles on how to reset user password, I could reset the password for the user. passwd menuka from the recovery mode. However, I tried the new password ...
1
vote
1answer
39 views

How to get the long 'less' prompt with sudo?

I have added the following to my user's .bashrc file to get a longer prompt in less: export LESS="-M" This is added to the root user's .bashrc file as well, so when I sudo bash to get a root shell, ...
1
vote
1answer
53 views

How do I edit a system file when I am root user but I receive “you are not in the sudoers file”?

I am using Ubuntu 12.04(LTS) 64 bit. I have edited /etc/group and added my username erfan in front of vboxusers as following: root:x:0: daemon:x:1: bin:x:2: . . . erfan:x:1000: sambashare:x:124: ...
1
vote
1answer
135 views

Setting proxy in Ubuntu terminal - proxy having special characters

I am trying to set proxy for a ubuntu server 12.04. Our proxy user name contains in the format: CompanyName\UserName and Password like: $test I tried to set proxy like this: export ...
1
vote
1answer
177 views

Would like to use different passwords for initial login and sudo for encrypted home folder

I just encrypted my home directory using ecryptfs and the instructions from How to Encrypt Ubuntu Home Folder After Installation. In order to really benefit from the encryption, however, I needed to ...
1
vote
1answer
40 views

kdesudo - can it return before spawned process closes?

kdesudo doesn't return until the process started with it exits. So, if I want to start three processes all at the same time, I have to use three terminal tabs. I'd rather use one tab that returns to ...
1
vote
1answer
216 views

How to add Active Directory users as sudoers

I'm following this article. What I've done: I can connect to Active Directory I can login to the Active Directory Now what I'm looking for is a way to make any active directory user a sudoer. I'm ...
1
vote
1answer
789 views

Authenticating error with ubuntu 14.04 LTS

< Problem: Just as I upgraded my ubuntu 13.10 to 14.04 LTS. I couldn't pass keyring and bash authentication. I can login in recovery mood for both root and my account, but that's not the case in ...
1
vote
1answer
369 views

Cannot add ppa for gvfs-mtp

I am a total newbie concerning anything to do with Ubuntu/Linux. I am running 12.04 on VM Player. I am trying to connect my HTC One (Android 4.3) to Ubuntu, and looking online has told me to do: ...
1
vote
1answer
3k views

Permission problem with SFTP in FileZilla

Recently, we installed Ubuntu Server on our servers this is very new for us. However, we tried to setup a apache2 server which did work. But the problem is that we can't configure apache and other ...
1
vote
1answer
2k views

Adduser: group sudo does not exist

I am able to login to my account but can't do anything related to superuser now. Updates, sharing, sudo and all things say authentication failed. I tried to correct that by going in recovery mode and ...
1
vote
1answer
791 views

cannot start graphical programs with sudo

i have a fresh ubuntu 12.04 installation with encrypted home partition. i copied over my home folder from another computer. when i try to launch graphical programs via sudo i get errors like the ...
1
vote
1answer
154 views

How do I perform a backup of sudoers file?

After reading the following two posts: Trying to install an openVPN GUI messed up sudoers Standards accounts are able to get root access using sudo without password request I would like to learn ...
1
vote
1answer
2k views

Having Error message while using the “sudo nautilus” command in terminal

I am using Ubuntu 12.04 LTS (32 bit). When I run "sudo nautilus" command in the Terminal, this output appears: tushar@tushar-G41M-Combo:~$ sudo nautilus [sudo] password for tushar: Initializing ...
1
vote
1answer
582 views

Upgrading from 12.10 to 13.04 -> dpkg: error processing sudo (--configure)

Here's the deal and reason I'm asking for your help. Last night I went on upgrading my Xubuntu 12.10 installation to 13.04, so at tty1 I run the command sudo do-release-upgrade and everything ...
1
vote
1answer
296 views

Problem with Login Screen and Sudo Comand

I'm new to Linux world, infact I have installed Ubuntu 12.04 yesterday on my computer. I have Dual-COre processor, 2GB RAM, 500GB HardDisk, No graphics card and XP in parallel. I'm facing So many ...
1
vote
1answer
836 views

12.04 sudo testparm -s smb.conf.master >smb.conf fails on permsissions

When I run sudo testparm -s smb.conf.master >smb.conf bash: smb.conf: Permission denied I just need a simple samba configuration to share files among 4 linux machines behind a router on a very ...
1
vote
1answer
478 views

installing apache 2 in ubuntu

Hello I am new to ubuntu. I am trying to install Apache2 using "sudo apt-get install apache2" command.I have set my java path as per rules but still its showing me this following errors: sha256sum ...
1
vote
1answer
345 views

Only user can no more sudo and root account in safemode has password

I accidentally commented the line Members of the admin group may gain root privileges: %admin ALL=(ALL) ALL in /etc/sudoers file, now i am unable to sudo into my system using the only available ...
1
vote
1answer
949 views

Sudo user without the permission to edit sudoers

How can I add an user to sudoers list with all privileges, but that user should not be able to edit the sudoers file ?
1
vote
1answer
197 views

How to dial modem without sudo

I am using ixconn as modem manager because it has many more features than the default network manager. But it cannot be used without root privileges (i.e., sudo). How can I use ixconn to dial my ...
0
votes
1answer
27 views

can't access the user account

Mistakenly I wanted to change the ownership or /usr and /etc and /home by chown -R username because I thought in this case, I won't see any error saying permission denied in installing softwares ...
0
votes
1answer
19 views

No module named _curses

I am very new to both Ubuntu and python. I am trying to run a code and getting : ImportError: No module named _curses. I tried: sudo apt-get update sudo apt-get install build-essential sudo ...
0
votes
1answer
21 views

problem with sudo somehow disabled

This is for an Ubuntu 15.04 on a laptop (Dell inspiron 3135). Somehow the capability to use sudo got lost, and probably connected, I can no longer log in on a locked screen. There is no problem to ...
0
votes
1answer
23 views

Problem with sudo and low graphics mode

I have a problem and I think is a big one, involving sudo and the low graphics mode. Everything started after I format a USB stick. It doesn't appear anymore and then I asked for help here on the ...
0
votes
1answer
22 views

messed up my /user directory permissions an now cannot run sudo or gksu

while changing the permissions for the /usr folder of owner to root read and write of group to root read and write of other to read and write i ignoratly checked to box to propagate to all contained ...
0
votes
1answer
61 views

Allow nopasswd sudo for specific user

I am trying to set the scp as a specific user with NOPASSWD. alice ALL = (bob:ALL) NOPASSWD: /usr/bin/scp As I did understand from this question. However when I save using my visudo I still can't ...
0
votes
1answer
77 views

Terminal error output RE: editing .conf file in Xbuntu [owned by uid 1000 istead of 0]

Was curious as to the terminal error output from running sudo Kate. I read in a forum that directed me to open my notepad using gksudo. Realizing that this had not been installed I just went ahead and ...