Red HatThis forum is for the discussion of Red Hat Linux.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
I want to add a new user to my linux system. A problem happened when i issued "passwd username" to set a password for the user.
The error message says "passwd: user not known to the underlying authentication module".
Check that the user exists in /etc/passwd, just to be sure, but otherwise it seems like a PAM configuration error. You could look at the appropriate files under /etc (usually pam.conf and/or files in the pam.d directory)