or, depending on the distro
you can rename a folder from adobeflashplugin-morestuff-blahblahblah-whydidtheynameitthislong to "runthis" from the gnome/kde interface, so that when you cd to it as root you don't have to type the entire thing.
oh no I just cd'd to the wrong directory! do I have to go through all that again?
will go "back" one step