[windows] insert text into existing file

cmd
type filename.txt >> oldfile.txt

ref:
http://stackoverflow.com/questions/903491/display-text-from-txt-file-in-batch-file
http://www.computerhope.com/copyhlp.htm
http://ask.metafilter.com/28875/Append-to-text-file

keywords:
append to text file, insert text using cmd, windows cmd command