up2date command was part of RHEL v4.x or older version. You need to use yum command to update and patch the system using RHN or Internet. Use yum command to install critical and non-critical security updates as well as binary packages.Login as the root user to install and update the system.ample output: You can use same command to list packages that satisfy dependencies: # yum whatprovides {dependency-1} {dependency-2}. Refer yum command man page for more information: # man yum. 1  up2date command to update Redhat enterprise Linux (RHEL)â¦. 2  CentOS / Red Hat Linux Find Out Latest Available Updatedâ¦.