DuckCorp Dico

Found one definition

1.                 From The Jargon File (version 4.4.7, 29 Dec 2003):
                   
   
   
                   
                     
   say
    vt.
       1. To type to a terminal. “To list a directory verbosely, you have to say
       ls -l.” Tends to imply a newline-terminated command (a ‘sentence’).
       2. A computer may also be said to ‘say’ things to you, even if it doesn't
       have a speech synthesizer, by displaying them on a terminal in response to
       your commands. Hackers find it odd that this usage confuses mundanes.