Thanks for your input...
I misrepresented my question.
I use a server (virtual environment, specifically Unix) command line interface . In the task I was given, I was asked to copy and paste the script into the command line interface. I copied it but I couldn't paste. Fellow students that are doing the same thing are done with theirs (they were able to paste by just right-clicking in the terminal)...
After doing some research I discovered that Opera automatically overides the context menu of a site.
This is what made me to looj for a means to disable opera's default context menu. Or is there a better method to paste?
NB:
Opera brings out the context menu that comes out when you right click on any whitespace in the browser...