Password At Logon Not Saving

Wow, I got my new Linux pc yesterday and it's very very fast. It's faster than my new MacBook.
So I go to the user account which also says administrator so I'm presuming that's the root owner?????? and I typed in my name and changed the password. The guy who sold it to me named the password user and the computer user. Yet when I go to the terminal my username and computer is still called user@user
How do I change the root password and computer name?

Wow, I got my new Linux pc yesterday and it's very very fast. It's faster than my new MacBook.
So I go to the user account which also says administrator so I'm presuming that's the root owner?????? and I typed in my name and changed the password. The guy who sold it to me named the password user and the computer user. Yet when I go to the terminal my username and computer is still called user@user
How do I change the root password and computer name?

Since this morning i have a problem with logging in on my user account in Linux Mint 17.1 Mate. After entering the password I get a black screen. Logging in as guest (without password) works fine.
How can I get back to my user account.

Hi
When i tried to change the password for a particular user as a root by using usermod command I didn't see any error at that time.But later when I tried to login again it is not accepting the new password as well as old password.Why its happening?Any help....

I am using debian 7.7 stable and when I open the root terminal it asks for the password.

But if I open it again, I get the message: 'Granted permissions without asking for password. The /usr/bin/x-terminal-emulator program was started with the privileges of the root user without the need to ask for a password, due to your system's authentication mechanism setup'.

Oh, really? Because I don't remember setting up any 'authentication mechanism setup'.
How can I change this so the root terminal always asks for the password?
Do I have a trojan already? Because I installed the OS just a few days ago.

Thanks very much.

I first did the "try it", running it from the CD. I had the option to install from there and did. I cannot download any thing. My user name is John and there are 5 dots in the password space? My version is: ubuntu 14.04 lts. I was not able to change the root to read-write so I could change the password. Nothing worked unbuntu does connect to my wifi.
I'm a real newbie but what I 've tried in ubuntu has impressed me.
Help please

Hi, I downloaded an ISO linux file for my Vmware it was with a read me file that show the login details into the OS. Now have finished the installation of the ISO on my Vmware but the problem I have is it not accepting the login details that came with the ISO I download.
this was the login that came with the ISO:

standard user:
username: user
password: password

administrative user:
username: root
password: password
It not accepting any of it I want to know if I did something wrong or there is master login deatils I can use to get to the desktop.
Am a real newbie this is my first time of dealing with Linux your answers will be appreciated a lot. Thanks.

In Linux Mint, I have right clicked on a folder and selected
"Sharing Options" -> checked the boxes to "Allow others to create and delete files in this folder" and "Guest Access..."

When I access the shared folder on Windows 7 it asks for a password. If I type a password in, it works.

I would like to configure it to not ask for a password, but just open the share.

I have created a new user with "useradd" than changed the password with "passwd" (logged in as an administrator). After that I tried to login as the new user but couldn't. Error message was: "call to lnusertemp failed (temporary directories full?). Check your installation".

I currently use Debian 8.

I checked the home directory and couldn't find a new created folder for the new user (wasn't supposed to be done automatically by useradd?) and I checked the etc/password and there was the new user name inside it though.

What should I do? I really need to have more than one user on this computer...

I've got my new system up and running. It's a nice fresh change after running Linux Mint for the past 4 years. Now comes the time of setting things up the way I like them.

As part of my setup, I have a all of my DVD's backed up onto my computer so that I can use a media server in the house. I run XBMC at my TV's with a central samba server (my computer) holding the movies.

In LM, all I had to do was right-click the directory "sharing" and select SMB share and type in the name. Everything else was done for me. This doesn't seem that simple.

Here's what I've done:
1. Menu > Administration > Samba
2. Entered in all the directories to share, under the BASIC tab I've selected visibile, writeable. Under the ACCESS tab I've selected a user (see below).
3. I've created a system user called xbmc with the password of xbmc.
4. I've created a samba user called xbmc with the password of xbmc.

Still not working. So, I went into the shell where I manually started the smb service:
# systemctl start smb.service

So, I went back to Menu > Administration > Samba > Preferences:
Set workgroup to WORKGROUP (but it automatically changes it to lower case after I exit).

Drop to terminal and restart service with systemctl.

I go over to my XMBC installation and try to connect to the source and it finds the SMB share. I click on it and after about 30 seconds a window pops up asking for login credentials. I enter xbmc/xbmc and after about 30 seconds it just cycles through. XMBC doesn't offer any messages, so I went downstairs to my Windows machine and tried to connect to a network drive. I enter in \\IP\share-name and after a few seconds it asks for login credentials. I enter xbmc/xbmc but then it fails with "bad username or password".

I'm not sure what I need to do to get this working.

Here is my /etc/samba/smb.conf file:
http://pastebin.com/m9ExpPJF

System Korora 21 (just installed/updated)
kernel: 3.18.9-200.fc21.x86_64