I added one user with myname(prashant) but i had not set any password for same user account. Still when i reboot(runlevel5), i os asked mi for password for same user account. I tried to login with without password as i not set, still authentication failure msg display. how it is possible?

OS : Cent os 6.4 I added more two users also but not beneficial. Please can any one tell me the reason and way to login with same user.

  • It sounds like you want to set an empty password for your user. Is that right?
    – dhag
    Commented Nov 20, 2017 at 20:57

1 Answer 1


From the useradd(8) man page:

   -p, --password PASSWORD
       [...] The default is to disable the password.

The way to allow login is to assign a password using passwd.

  • To allow login by using passwd it is ok, but when i need to use this command. I mean after just useradd or when. Because i added user already and restarted system. I am now using this command but it is setting password. Kindly let me know how i disable the password of created account and while creation of new account using useradd command how i disable the password. Thanks in advance.
    – Prashant
    Commented Nov 20, 2017 at 20:12
  • @Prashant Your question is unclear. Do you want to set passwd or not? Commented Nov 20, 2017 at 20:59
  • The question is clear: the OP wants to login and cannot because the system is asking for a password, even though none was set. Commented Nov 20, 2017 at 21:07
  • Yes G-Man is correct, i just added user with useradd command and when i reboot machine it shows me to enter password for same user.
    – Prashant
    Commented Nov 21, 2017 at 10:56

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