title: Write (Unix)
text: # Write (Unix)
  
  In Unix and Unix-like operating systems, write is a utility used to send messages to another user by writing a message directly to another user's TTY.
  
  ## History
  
  The write command was included in the First Edition of the Research Unix operating system. A similar command appeared in Compatible Time-Sharing System.
  
  ## Sample usage
  
  The syntax for the write command is:
  
  The write session is terminated by sending EOF, which can be done by pressing Ctrl+D. The tty argument is only necessary when a user is logged into more than one terminal.
  
  A conversation initiated between two users on the same machine:
  
  Will show up to the user on that console as:
  
  