I install Ubuntu 12 in my desktop PC. I did not set up account password. There is no login asking me each time turn on the computer. But there is a password every time I run to su in a terminal. I remember that yesterday I can enter my long time using password for su command.
Today I cannot enter su in the terminal. It is not like I misremember the password. I have tried to recover account password after entering the recover mode. I run
command in a terminal. There is no account info echoed.
Now, I have no idea what my su password is, or how to reset that password.
It is really bizarre to me. I do not thing I use other password in this Ubuntu PC.
Could you help me to enter su?
Thanks a lot.