2.1 Unix/Linux (includes Mac OS X) (VirtualBox and Linux Mint environment, Video)
    2.1.1 Command Line
        2.1.1.1 Files and Directories (Video)
        2.1.1.2 Aside
        2.1.1.3 Helpful Tips
        2.1.1.4 Permissions
        2.1.1.5 Compression/Archiving
        2.1.1.6 Remote
        2.1.1.7 Other Commands
    2.1.2 I/O Redirection
    2.1.3 Text Editors (vi/vim)
2.2 Windows
    2.2.1 Command Line
        2.2.1.1 Files and Directories
    2.2.2 Text Editors
        2.2.2.1 Edit
        2.2.2.2 Notepad
        2.2.2.3 Others
    2.2.3 Other commands
2.3 Scala Tools