So I was following the instructions here - https://help.ubuntu.com/community/SAGE
The apt get command on your link doesn't find anything.
And what is this instruction of putting a link to the "sage executable in /usr/local/bin"
So in my current folder structure I find, ~/Desktop/sage/sage-6.4-x86_64-Linux/src/sage
Is this the "sage executable"?
Guessing so, I did this (as per the above link)
ln -s ~/Desktop/sage/sage-6.4-x86_64-Linux/src/sage /usr/local/bin/sage
But then doing the above yields a link to this in /usr/local/bin called "sage".
But that link doesn't work.
(the sub-folder "sage" of Desktop is something that I created into which I unzipped the file I downloaded from the mirror - the downloaded folder called itself by that name, "sage-6.4-x86_64-Linux" and its subfolders are what it anyway came with)
What am I getting wrong?