I'm running Xubuntu 12.04 and recently installed xvnc4viewer using the synaptic package manager. The executable is located in /usr/bin, which is my $path. However, I get "xvnc4viewer: command not found" when I type the program name into a terminal window. If I type /usr/bin/xvnc4viewer the program runs. So, why doesn't the automatic path search work? Thanks, Jim Remington