I installed Iraf from repo COPR, but it doesn't start.

german@centauri ~ $ mkdir iraf
german@centauri ~ $ cd iraf
german@centauri iraf $ mkiraf
-- creating a new uparm directory
Terminal types: xgterm,xterm,gterm,vt640,vt100,etc.
Enter terminal type: xterm
A new LOGIN.CL file has been created in the current directory.
You may wish to review and edit this file to change the defaults.
german@centauri iraf $ xterm &
german@centauri iraf $ cl
/usr/lib64/irafbin.linux64/vocl.e not found
/usr/lib64/irafbin.linux64/vocl.e: Command not found.

The directory where cl.e/vocl.e was installed is:
/usr/lib64/iraf/bin.linux64/