tee
Redirect output to multiple files. Copies standard input to standard 
  output, making a copy in zero or more files. The output is unbuffered.
SYNTAX
      tee [-ai] [file ...]
Options
   -a      Append the output to the files rather than overwriting them.
   -i      Ignore the SIGINT signal.
   file    A pathname of an output file.    
The tee utility takes the default action for all signals, except in the event of the -i option.
Exits 0 on success, and >0 if an error occurs.
"Nurture your thoughts with great thoughts, to believe in the heroic, makes heroes." - Disraeli
Related commands:
  
  cat - Display the contents of a file
  
  Equivalent BASH command:
  
  tee - Redirect output to multiple files