I can't do "sudo"

Posted by Klevin92 on Ask Ubuntu See other posts from Ask Ubuntu or by Klevin92
Published on 2011-12-07T00:51:30Z Indexed on 2012/04/01 23:40 UTC
Read the original article Hit count: 388

Filed under:

password

|

gksu

|

su

Let's describe it from the beginning:
I was planning to re-enable the password requirement in LightDM for security reasons. But, since my PC's been sluggish these times, it FC'd the password setup when I was entering and now I can't enter it even with combinatorics. I have followed the tips in the Help page, but with all of them I have issues:

I try to enter recovery mode (so that I type passwd and my name and change it), but it is a black screen just like my boot screen (because of nVidia graphic card compatibility issue), then I can't do anything
I also tried the editting "shadow" file, but the guide talks about some commas that I just don't see where they are supposed to be.
I even tried deletting the keyring file like it's said, but nothing happens (except that I lose the other passwords)

So is there anything I can do to have my password back? (a bonus would be stopping all this sluggish, apps not responding, etc)

© Ask Ubuntu or respective owner

Related posts about password

remember password is not filling the password field automatically

as seen on Stack Overflow - Search for 'Stack Overflow'
IE is not filling the password field automatically when i click on the bookmarked url. But it's working on firefix,chrome etc. I tried with autocomplete="on" but no use. IE will fill the password only When i select a usename from the possible user names which the browser had kept for each login.… >>> More
Lost shell password: change user password from root

as seen on Super User - Search for 'Super User'
Hi. I recently accidentally forgot my user password to my shell. I know the root password. How do I change the user password? I figure it's something like $su root $passwd -[something] username but I can't get it to work. Halp pls? >>> More
[GEEK SCHOOL] Network Security 1: Securing User Accounts and Passwords in Windows

as seen on How to geek - Search for 'How to geek'
This How-To Geek School class is intended for people who want to learn more about security when using Windows operating systems. You will learn many principles that will help you have a more secure computing experience and will get the chance to use all the important security tools and features that… >>> More
Membership Generate Password alphanumeric only password?

as seen on Stack Overflow - Search for 'Stack Overflow'
How can I use Membership.GeneratePassword to return a password that ONLY contains alpha or numeric characters? The default method will only guarantee a minimum and not a maximum number of non alphanumeric passwords. I have the solution already but thought I'd share for future visitors. .. Answer… >>> More
Password Recovery without sending password via email

as seen on Stack Overflow - Search for 'Stack Overflow'
So, I've been playing with asp:PasswordRecovery and discovered I really don't like it, for several reasons: 1) Alice's password can be reset even without having access to Alice's email. A security question for password resets mitigates this, but does not really satisfy me. 2) Alice's new password… >>> More

Related posts about gksu

Is the difference between sudo and gksu the same as the difference between sudo -i and sudo -s?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Is the difference between sudo cmd and gksu cmd, the same as the difference between starting a shell with sudo -i and sudo -s? ... or put another way, Is sudo cmd the same as sudo -i cmd and gksu cmd the same as sudo -s cmd? EDIT: Based on what I read on an Ubuntu Documentation Page where it… >>> More
How can I run sudo gedit as gksu gedit

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I'm looking into ways of automatically loading Gedit as gksu gedit when I enter sudo gedit by mistake? I have found that I have made a number of files unreachable by using gedit and I have only just found out why! ACHIEVED SO FAR I have written a script which will make an alias so that if I type… >>> More
Error on `gksu nautilus` because Nautilus cannot create folder "/root/.config/nautilus"

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a problem executing nautilus in root mode on a fresh installation. I just installed Ubuntu 12.04, and the first thing I did after first boot was run the command gksudo nautilus, I've got this error message: Nautilus could not create the required folder "/root/.config/nautilus". Before… >>> More
gksudo waits for a few seconds after execution

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i'm frequently using application launchers to run personal bash scripts and thus i often use gksudo in case i do administrative tasks. the problem is that when i execute a command with gksudo,the execution is successful, but afterwards gksudo waits for about 5 seconds before it closes/finishes. in… >>> More
I can't do "sudo"

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Let's describe it from the beginning: I was planning to re-enable the password requirement in LightDM for security reasons. But, since my PC's been sluggish these times, it FC'd the password setup when I was entering and now I can't enter it even with combinatorics. I have followed the tips in the… >>> More