You can debug and cross compile the Linux kernel but can't be arsed to figure out what ctrl+c and ctrl+v are used for in a terminal? (Please do, especially ctrl+c is very useful)

Anyway, to paste in most standard Linux terminals, select whatever text you wish to paste, then do shift+insert or middle click. This works in gui apps as well.

Also please do note that there are generally at least two clipboards in Linux systems -- the "selection clipboard" and the "ctrl+c" clipboard. To paste from the ctrl+c clipboard in a terminal you will have to press ctrl+shift+v, since, as stated above, ctrl+v is reserved for another function.