Odroid U3 Super User Password Lost/recovery

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?

I found an old laptop that has centos 5.5 installed. I reset the root password, but I need to reset the gui password. Is there a way to view this password or reset it? I have not worked with Linux over 5 years and am rusty on all the commands

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.

Hi, I am new to Linux so might seem a bit dim lol. My Grandson has loaded Ubuntu onto my old laptop but did`nt put in a user name or password. Can I put them in without deleting it and starting again, thanks Tom

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 need to be able to create new user accounts and make sure they're forced to reset their password upon first login, also if they don't log in within 4 days of the account creation their account must automatically lock. How do I accomplish this?

thank you.

Hi, I forgot my password so went into root to change it.

From grub menu, Ubuntu : advanced options : ubuntu recovery : network : root

input passwd then typed in a new password and re-entered password. rebooted.

Tried to uninstall Firefox from software centre but the new password was not accepted for authentication.

Could anyone advise what the problem could be or suggest what I may have done wrong. The password appeared to be accepted ok in root. Thanks

Hi, I'm really a newbie when it comes to Linux, so please bear with me.

We have a working FTP using vsftpd with a pam.d database (by the looks of it).

I've found the list of users/password in the /etc/vsftpd/ folder called passwd, but they are all encrypted.

How can I change the password for a single user? I'm sorry I've been looking for over 3 hourw, still don't understand how to do this.

Thank you very much for whomever can help.

In our environment i have to ssh to each an every servers
ssh <hostname> then which prompts for password for every login
i have to create a user name on 30 severs manually it takes much time so need a script to do this task i have googled and found some for loop scripts but it did not fullfill the requirement.
First i have to check whether the users exists and not and later add the user or reset the password for user using script