Ubuntu Servers :: Entering Correct Password For Sudo Results In Segfault After 2 Attempts
Feb 2, 2011
I cannot sudo nor log into a second ssh session on my Ubuntu 10.10 server edition headless setup. Entering an incorrect password works as expected but the correct password gives errors, and on the second attempt a segfault. I recently changed my password as the old one was about to expire, that was 3 days ago, I can't find evidence that I have sudo'ed or logged in a second session since, I have been logged into it via ssh throughout all of it and I am still currently logged in. What should I do to correct this problem? I'm worried that by turning it off I will lose all access. Is the only option using a live cd to change the password?
[Code]...
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Feb 7, 2010
My root filesystem recently filled up. I finally established why - that my /media directory had filled up due to the USB-attached device having been unmounted for whatever reason, and SimpleBackup tried backing up without the mount in place - thereby filling up the filesystem.
I discovered that the root directory was full when the machine tried to get updates, and couldn't. So, I went into /media and tried to delete the backup directory and file(s) that were in that directory, but it tells me that permission is denied. So I try to SUDO the same command, and it tells me 3 times in a row, "Sorry, try again", followed by "sudo: 3 incorrect password attempts".
So, how to I get root privileges back again?
Code:
name@machine:/media$ sudo rm -R FreeAgent
Sorry, try again.
Sorry, try again.
Sorry, try again.
[Code].....
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Jul 22, 2010
After reading this pdf on top 5 things to log for security, ive decided to attempt this for my webserver. how i might setup some logging systems to do these tasks. Basic things i need to be able to do: Record things like password attempts on htaccess files, from what IP address, and how many attempts there were. Any useful links anyone can think of to get me started? Im a student programmer at university so any programming i should be able to cope fine.
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Mar 10, 2011
I have installed Ubuntu Server 10.10 in Virtual Box in order to evaluate it for a project.I have installed Gnome and can log in fine using my password. However, whenever I am prompted for my password when doing anything SUDO I am told my password is incorrect, starting Synaptic, for example
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Aug 16, 2011
I am suddenly not prompted for my password when I run any command as sudo on a few of my Ubuntu servers.
if I run sudo -K, the session is cleared, and I am prompted again for my password, however it saves/caches it until I run sudo -k again even if I log out and back in. I want it to prompt me for my password, as it should (and did) by default, for security.
Any ideas what could be causing this?
Here's my /etc/sudoers file code...
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Feb 8, 2011
I'll post the entire code here, and then specifically highlight what is just failing in a fashion I'm apparently incapable of fixing a few hours later:
Code:
#!/usr/bin/expect
# The script should be called with a file in the directory called sshServerList
# That file has the following format:
# Line # | Contents of line
[code]....
I've had all kinds of different results and problems, but I've never been able to successfully log into multiple servers, though the first server in the list most times works okay (though might not on this iteration). I'm a bit hack and slash and I would be very greatful not only for a solution, but any tips on how I should have done this and places where I could clean up my code.
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Jun 30, 2011
I'm using Ubuntu 10.04LTS. I'm trying to configure my chat accounts. But after entering username and password, it is asking "Enter password to unlock your login keyring". I have entered my login password. But it is saying that "The password you use to log in to your computer no longer matches that of your login keyring."
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Dec 5, 2010
Whenever I am prompted to enter the root password, typical example would be in 'Power Management' clicking the button 'Make Default', pressing ENTER or clicking AUTHENTICATE doesn't close the box. To get passed this I have to press ALT+F4 and it continues which I'm assuming still does authenticate.
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Dec 28, 2010
When I use rar e to extract a rar file, the request for entry of the password always says password will not be echoed. For longer passwords, this is difficult, since a single mistyped key will result in an error.
Does anyone know how I can use the rar command to extract and have the password echoed (appear on the screen as I type it)?
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Jul 20, 2011
So, I want to write a bash script that will allow me to scp and ssh to a different server in the network.
Though, I dont know how to get rid of the inputting passwod line if both commands.
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Mar 20, 2010
I would like to be able to enter codes. I have pressed ctrl alt f5, 6 etc and get to the black screen which asks for username and password. I enter the username and password that I use to log in, but I keep getting the message telling me that they are not correct.
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Jun 10, 2010
Any idea how to log a user in without a password in GDM? I've found this archived thread but it doesn't appear to do anything when I tried what it says: [URL] I'm not looking for auto-login. I'd simply like one user to be able to click on his name and it will log in without prompting for a password.
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Jun 27, 2011
I am new to Ubuntu and been trying to download some software not in the Software centre but when I go to terminal and I enter the command text I get prompted for my password ( it automatically has my login name) but the flashing cursor will not allow me to enter any text ,it just keeps on flashing but then it tells me I have entered incorrect password, What can be the problem ? The keys are not connecting with the terminal window it appears.
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Jan 27, 2011
forgive me for raising a common problem again, but I cannot find a fix in the other threads.
I am trying to catch up on upgrades. Step 1 is to get up to 9.10 from 9.04
Doing so however I am being told I don't have enough disk space
I present have my 35-odd GB HDD partitioned:
6GB for Ubuntu
28 for Data
and 1. or so for swap
evidently I underestimated my Ubuntu partition.
what can I do now?
I have run Computer Janitor (is that the application that results from Sudo apt-get clean? I did that but couldn't figure out how to "clean"?)
I have Gparted installed but I don't see how to use the Move/Resize option.
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Jan 2, 2010
I've installed Karmic after having used Jaunty in the past and it's working great, but I have a couple of security questions...
I opened the Disc Utility (Palimpsest) under System>Administration and was amazed that it looks like it will let me delete partitions on my hard drive, and without even asking for a password. This seems like an enormous security oversight, what am I missing here? Is there a bug filed for this?
Also related, why does Ubuntu allow a user to disable startup applications without requiring a password?
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Mar 16, 2010
I like the "Ubuntu" sudo philosophy and wanted to setup this sudo the same way on my Debian system. I was happy when I found that I just have to do the following:
-create a group 'admin'
-adduser christian admin
-visudo
-add the line: %admin ALL=(ALL) ALL
Then I tried sudo rm -rf / to check if sudo works. All worked fine. No, seriously, I can move around files that belong to the root and such, so sudo somehow works. But when creating new files with sudo, like e.g.
tar xzf myZippedTarball
these files belong to user 41034 and to the group users instead of root root:
drwxr-xr-x 7 41034 users 4096 2009-11-01 01:07 libsvm-2.9
Certainly, this is not the way I want to have. The user 41034 doesn't even show up in /etc/passwd...
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Mar 12, 2010
I'm a newbie running Ubuntu 9.10. I have two users (wife and me), and each user's screensaver is set to lock so that on wakeup, we get to choose which user's desktop to go to. However, Ubuntu requires a password, so this is pretty tedious.I'd like to switch users without entering any password. I know about this trick that works for the boot login, but it doesn't deal with multiple users.Is it possible to set empty passwords for users in Ubuntu, or skip the password in other ways?(I'm expecting real Linux users to suggest that passwordless users must not get any rights and there be an admin user with a strong password.
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Mar 12, 2011
Is it possible to switch users in Debian without entering a password, as in Ubuntu Maverick? I already tried adding a nopasswdlogin group but it did not work, even though the "don't ask for password on login" entry in the login manager is no longer greyed out. Replacing gdm3 with gdm also did not work.
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Jun 16, 2011
am trying connect to server via ssh after entering the password it's just keep stuck !!!
*** NOTE : i was using the server and am sure about the user name and password ...
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Dec 29, 2010
How to allow a user to login without entering a password?
If my question sounds wierd then check out m-net at www.arbornet.org/m-net.php and see how it works.
Telnet / SSH to m-net.arbornet.org and type in newuser and it won't prompt for a password.
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Feb 28, 2010
I just installed CentOS 5.4 (x86_64) and I encrypted my /home /var /tmp and /mnt/Storage partitions, along with my swap partition. My only complaint is that when I boot, I have to enter my password 4 times, and I did not pick a short password. The password is the same for all 4 partitions. Is there anyway I can set things up so I can just type my password once? Once I get everything set up, I won't be booting that often, but right now it is a PIA.
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Jan 8, 2010
I have an unreasonably long time to wait from log in, to when my desktop is ready, it takes 40 seconds from hitting enter to seeing my files on the desktop, and about another 15 seconds from then to hearing the opening jingle. It used not to be this way, before it took less than 10 seconds, but about 4 days ago this time shot up suddenly, is there some way to diagnose whats causing this delay?
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May 8, 2011
in ubuntu 10.04 how to get into single user mode with out entering the root user password
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Jun 10, 2011
I tried installing lubuntu 'over' ubuntu, but am now locked out. Basically, the login screen loads, I've tried entering my username and password, but it doesn't work. I'm not really sure of my username as Ubuntu would automatically fill it in for me. But lubuntu isn't auto-loading my username, so I've been trying to enter all types of variations. I am 100% of my password though
I tried getting help at lubuntu's chat, but that's been kind of hard since there aren't that many people responding. The lubuntu people had me go into recovery mode (2.6.38-8 recovery) and so that would go smoothly. But when the screen of the options of resume, clean, dpkg, failsafex, etc, I cannot move the selector down. So basically, the orange selector is stuck at resume. Whenever I press the down key, the computer runs some lines, and I cannot go back to the list of options. The list is still visible, but can't select any of the options.
If I press the 'end' button, that executes something (probably the last option in the list), and I shut down the pc when it did that. The other arrow keys do nothing. The tab button manages to move the selector from the list to 'Ok' and 'Cancel.' But I cannot move the selector down.. TL;DR: I need to either get into recovery mode, or find a way to get my exact username lubuntu thinks it is.
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Jul 19, 2010
I am liking Opensuse, but have a problem when using my NFTS partitions (dual boot so docs on this partition). I always have to enter a password which annoys me to no end. Most distributions do this, in fact only for Mandriva have I been able to find out how to do this without a password. Is it possible with Opensuse?
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Mar 18, 2011
I have a system installed fedora 13 which I have updated yesterday. Now when I am trying to start system it restarts immediately after entering the user name and password. I am not the expert user.
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Apr 19, 2010
Well, first off I'd like to say that I am much happier with the wireless on Ubuntu 10.04 than I was on 8.10 (the last time I tried Ubuntu). However, there is a small annoyance I'd like to fix: every time I log in, I get a prompt saying that an application (the wireless network manager) is requesting the password for such-and-such keyring. I have to enter the password before I can connect to my network. Is there a way to get around this somehow so that I don't have to enter the keyring password for this keyring (the "default" keyring) every time I log in?
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Oct 6, 2010
I am using fedora 12.I have two internal drives. Both are ntfs. Whenever i click on them it prompts to enter root password. But i want to mount them as normal user without entering any root password. How can i disable it so that i am not asked to enter root password everytime i mount the drives.
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Jan 8, 2011
im trying to install ubuntu 10.10 on my notebook but it stop on the section of entering my name, computer name, user name, password... and at the bottom section it says... ready when you are...
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Dec 21, 2010
i am having a problem with the installation with ubuntu 10.10 during the installation, i was entering my setup info (login password, timezone, etc.) when everything stopped working, it wouldnt let me continue, the forward button wouldnt work. i let it set for a good 30 minutes but it wouldnt do anything.
so unable to continue, i restarted and tried to boot from my cd drive and now it wont boot from the drive, and since i let ubuntu delete my windows partition, i cant boot from it so i basically have a blank hard drive. the cd drive will boot other cds because i booted hirens boot cd in an attempt to make sure the cd drive was functioning and ran diagnostics to make sure the drive was alright.
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