if "sudo" is set up
"su" and "su -" are used by default on rhel/cent/sl
sudo must be set up and configured
BUT the questions begs to be asked
why copy a rpm package from tmp to opt ???
why not install it and why was it in /tmp to begin with ?
also xv 3.10 is from 1998 and for a VERY DEAD and VERY old version of Redhat
NOT!!!! the current RHEL 5.10
there is 16 years between the two
rh and rhel are TWO DIFFERENT operating systems
the OLD RH5.2 that XV 3.10 was built for came out in 1998
Why do you need to use a rather poor graphics ( converter mostly)program that is 16 years out of date