MS-DOS Commands

http://www.computerhope.com/msdos.htm

DOS - String Manipulation
http://www.dostips.com/DtTipsStringManipulation.php#Snippets.Replace

 STDOUT, STDERR
http://shaunedonohue.blogspot.hk/2007/09/every-time-i-need-to-redirect-dos.html

Redirection
http://www.febooti.com/products/command-line-email/batch-files/ms-dos-command-redirection.html