From Windows to/from attu:

Here are some options for moving files stored on a Windows machine

From Mac to/from attu:

scp or sftp at terminal

From Virtual machine to/from attu:

Use scp or sftp at terminal

A fancy option, set up a mounted directory on your machine:

mkdir csehomedir
sshfs csehomedir/

From Virtual machine to local machine (Mac or Windows):

You can drag and drop from the vm to desktop. You may also be able to copy and paste using right click or control-c, control-v.

From attu from a URL

wget - to get a file from a url

For more info look at the slides linked on the homework page.