From Fedora Project Wiki
system-config-rootpassword
What is system-config-rootpassword?
The system-config-rootpassword tool lets you change the root password of your system.
Download
Grab the latest source from CVS
You can get the current source using the following commands:
$ export CVSROOT=:pserver:anonymous@rhlinux.redhat.com:/usr/local/CVS $ cvs -z3 login (hit enter) $ cvs -z3 co system-config-rootpassword