user account without password

[M.W. Chang]

how could I create a user account that doesn't need a password to login?

The special account will not have an interactive shell, just run a script.

I only knew that I need to temper with /etc/pam.d/login,

password        required        pam_pwdb.so nullok

-- 
   .~.    Might, Courage, Vision. In Linux We Trust.
  / v \   http://www.linux-sxs.org
/( _ )\  Linux 2.4.22-xfs
   ^ ^    9:50pm up 2 days, 20 min, 1 user, load average: 1.22, 1.20, 1.22