write(1) DG/UX 5.4R3.00 write(1)
NAME
write - write to another user
SYNOPSIS
write user [ line ]
where:
user A user name (login name)
line A terminal line (e.g., tty00) to which user is connected
DESCRIPTION
Write copies lines from your terminal to that of another user. When
first called, it sends this message to the person you want to talk
to:
Message from yourname (tty ??) [ date ]...
When it has successfully completed the connection, write also sends
two bells to your own terminal to indicate that what you are typing
is being sent.
The recipient of the message should write back at this point.
Communication continues until an end of file is read from the
terminal, an interrupt is sent, or the recipient has executed "mesg
n." At that point, write writes EOT on the other terminal and exits.
If you want to write to a user who is logged in more than once, use
the line argument to indicate which line or terminal to send to;
otherwise, the first writable instance of the user found in /etc/utmp
is assumed and the following message posted:
user is logged on more than one place.
You are connected to "terminal".
Other locations are:
terminal
Permission to write may be denied or granted with the mesg(1)
command. Writing to others is normally allowed by default. Certain
commands, in particular nroff(1) and pr(1) , disallow messages to
prevent interference with their output. However, if the sender has
super-user permissions, messages can be forced onto a write-inhibited
terminal.
If the character ! is found at the beginning of a line, write calls
the shell to execute the rest of the line as a command.
We suggest the following protocol for using write: when you first
write to another user, wait for them to write back before starting to
send. Each person should end a message with a distinctive signal
(e.g., o for "over") so that the other person knows when to reply.
The signal oo (for "over and out") is useful when you're terminating
the conversation.
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write(1) DG/UX 5.4R3.00 write(1)
International Features
write can send characters from supplementary code sets.
write uses the locale of the sender to determine printability.
FILES
/etc/utmp To find user
/bin/sh To execute !
DIAGNOSTICS
user is not logged on
The person you are trying to write to is not logged on.
Permission denied
The person you are trying to write to denies that permission
(with mesg).
Warning: cannot respond, set mesg -y
Your terminal is set to mesg n; therefore the recipient cannot
respond to you.
Can no longer write to user
The recipient has denied permission (mesg n) after you have
started writing.
SEE ALSO
mail(1), mesg(1), pr(1), sh(1), who(1).
groff(1) in the GNU Toolset (Data General Model R028A).
xroff(1) in Xroff available from Image Network.
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