anchor.diff:  
   [index]
   == linux ipc
  -=== ipcs
  +==== ipcs
   *provides information on system inter process communication.*
   
   ----
  
positive.code: (...)
  ----
  
  === nm
  *provides info on the symbols used in an object file or executable. by default, nm shows the symbol: value, type and name.*
  
  basic syntax:
  
negative.code: 
  This is just a few general commands that are useful to know.
  
  ==== find
  Search the current dir (and below) for a file named sue:
  ----
  $ find . –name sue
  