dos commands:

default

dir syst??.*
? matches one letter
* matches one or more letters

type hello.txt
view file contents

dir > dir.txt
redirects dir output to a file

subst w: c:\www\substitutionFolder
creates a virtual drive of a folder

echo %PATH%
prints path environment variables

set PATH=C:\newFolder;%PATH%
add newFolder to path

alt + space + n
minimze current window

alt + space + cursorKeys
move window without a mouse

taskkill
kills task

tasklist
list applications and their PID

default