— send a
message to another user
utility allows you to communicate with
other users, by copying lines from your terminal to theirs.
When you run the write
command, the user you are
writing to gets a message of the form:
Message from yourname@yourhost on yourtty at
Any further lines you enter will be copied to the specified user's terminal. If
the other user wants to reply, they must run
When you are done, type an end-of-file or interrupt character. The other user
will see the message ‘
that the conversation is over.
You can prevent people (other than the super-user) from writing to you with the
If the user you want to write to is logged in on more than one terminal, you can
specify which terminal to write to by specifying the terminal name as the
second operand to the write
Alternatively, you can let write
select one of
the terminals - it will pick the one with the shortest idle time. This is so
that if the user is logged in at work and also dialed up from home, the
message will go to the right place.
The traditional protocol for writing to someone is that the string
’, either at the end of a line or on
a line by itself, means that it is the other person's turn to talk. The string
’ means that the person believes the
conversation to be over.
command appeared in
Version 1 AT&T UNIX
setting is used to
determine which characters are safe to write to a terminal, not the receiver's
has no way of knowing).
utility does not recognize multibyte