I'm trying to install yasm to assemble some code using emacs. I have no knowledge on these things. However i installed emacs on my virtual machine using sudo apt-get install emacs. But when i try the same thing for yasm. I have this error : "E : Unable to locate package yasm". I already tried to use sudo apt-get update/upgrade but still doesn't work. Most likely, I forgot to add something i should have added. Thanks for helping ! PS : It's yasm i want not nasm.