Windows cmd commands

1. Remove folder with all content :
   rd /s /q       - faster and better then explorer for erasing large amount of files
2. Change file/folder attributes
   attrib +shr -shr filename/folders - system file
   h - hidden file
   r - read only file
3. View all files/folders including hidden/system etc
   dir /a
   dir /a:h   - display only hidden files
4. View windows install date :
   systeminfo | find "Install Date"
5. Force date and time sync
   net start w32time
   w32tm /resync /force
6. Set date or time :
   date 04-15-2015