hi. i am trying to run a virus check using a terminal. i have entered the instruction and the terminal displayed some information. i then went and closed firefox and the terminal now displays only 'nigel@nigel:~$' i tried to reenter the instruction with copy/paste but the copy paste instructions when i right click my mouse are greyed out and do not act. what have i done wrong. i have also tried restarting ubuntu but with no luck.
help please
nigel