.CD "write \(en send a message to a logged-in user"
.SX "write\fR [\fB\(encv\fR] \fIuser\fR [\fItty\fR]
.FL "\(enc" "Use cbreak mode"
.FL "\(env" "Verbose mode"
.EX "write ast" "Send a message to ast"
.EX "write ast tty1" "Send a message to ast on tty1"
.PP
\fIWrite\fR lets a user send messages to another logged-in user.  
Lines typed by the user appear on the other user's screen a line at a time 
(a character at a time in the case of cbreak mode).  
The file \fI/usr/adm/wtmp\fR is searched to determine which tty to send to. 
If the user is logged onto more than one terminal, the \fItty\fR argument
selects the terminal.  Type CTRL- D to terminate the command.
Use ! as a shell escape.