Passwords

[Joseph Durbin]

Situation:
I want to be able to change a user's password from a C program...
Doing it from a Bash shell would also be o.k.

Problem:
I don't want to write the WHOLE thing in C, using crypt command
and parsing the passwd file, looking for new GID & UID,
i 'm hoping there is a simple solution - i tried the following:

passwd username | echo -e "newpassword\newpassword"

something like this would be perfect....
just anyway to set a password with a single non-interactive command!

Thanks alot!!
-Joe