I installed DrRacket with the Software Center, but it only installs the verion 5.2.1. I downloaded the installer from the website http://racket-lang.org/download/
I just started using ubuntu... and after a bit of searching I found out how to install .sh files:
chmod +x filename.sh
Then the terminal asks me if i want to install the Unix-style distribution, I type in yes.
After this the terminal says:
Where do you want to base your installation of Racket v5.3.1?
(If you've done such an installation in the past, either
enter the same directory, or run 'racket-uninstall' manually.)
1 - /usr/... [default]
2 - /usr/local/...
3 - ~/... (/home/julian-b/...)
4 - ./... (here)
Or enter a different directory prefix to install in.
I choose the default one (1) and I get the following...
Error: The entered base directory is not writable: /usr
How do I make my filesystem or /usr writable?