COOL CMD TRICKS

1.To create an undeletable folder:
   run cmd as admin...put name of drive where you want to create folder eg C drive (C:) and hit enter...type (md\con)...hit enter...to delete 
   type (rd\con) and it should be gone.

2.To shutdown pc using cmd,run as admin then type (shutdown -s).....to restart type (shutdown -r).....to log off type (shutdown -1)

3.To set a timer to shutdown pc type...(shutdown -s -t 60) 60 represents the number of seconds after which you want to shutdown your pc. Hit enter to start the timer.
   You can also print a message that will show during shutdown type (shutdown -s -t 60 -c "your message"),,,then hit to start timer.

4.To hide a folder.type (attrib +s +h then type directory of folder that you want to hide. eg (attrib +s +h ‪D:\A Windows 8 pro) then hit enter
  Your folder will vanish and won't appear even if you enable show hidden files.
   To get it back us same command only change + to - eg (attrib -s -h ‪D:\A Windows 8 pro)