sendmsg - send a message via Internet

       Ulli Horlacher  -  framstag@rus.uni-stuttgart.de

3rd Berkeley Distribution                                                                             SENDMSG(1)

sendmsg sends a one line text message to the terminal(s) of the specified recipient.

       On the receiving site there must be a SAFT-server (Simple Asynchronous File Transfer) installed, like the
       sendfiled and the recipients terminal must be writeable.

       The recipient address can be specified as:

       user
           a local user or a sendfile alias (see below), e.g.: framstag

       user@host
           an user on a remote host, e.g.: framstag@bofh.belwue.desaft://host/user
           like above, but in URL-syntax, e.g.: saft://bofh.belwue.de/framstag

       saft://host:port/user
           like above, but with alternate SAFT-port, e.g.: saft://bofh.belwue.de:4870/framstag

sendmsgneg@linux.rus.uni-stuttgart.de
       message: howaboutlunch?

/etc/sendfile.deny
             Users which are not allowed to receive files or messages (set by root).

       /var/spool/sendfile/$LOGNAME/config/restrictions
             List of addresses from where you don't want messages or files. The format is:

                user@host [mfb]

             m stands for messages, f for files and b for both. Wildcards * and ? are allowed. Examples:

                gates@microsoft.com b
                *aol.com m

       /var/spool/sendfile/$LOGNAME/config/aliases
             The sendfile alias file. Format:

                alias address

             Example:

                chief grmblfz@bigvax.somewhere.net

       sendmsg - send a message via Internet

-4,-6  Explicitly force  IPv4 or IPv6 connections.  By default, the program will try to resolve the name
               given,  and  choose the appropriate protocol automatically. If resolving a host name returns both
               IPv4  and  IPv6  addresses, sendmsg will try to use the adresses in the order they  are  returned
               by the resolver.

       -v      Verbose mode: show SAFT protocol messages.

       -V      Show version information and exit.

       -f      Force sending of messages and ignore tty (re)settings.

       -r      Reply to last received message.

       -m      Receive messages only on this tty. This is the default.

       -M      Allow receiving messages on other ttys.

       -l      Allow sending of multiline messages messages.

       -s'message'
               Send directly message.

       -u'from'
               Set sender to from instead of $LOGNAME.

       -q      Quiet mode: print no transfer messages.

sendfile(1).

sendmsg [ -46vVfrmMl ] [ -u'from' ] [ -s'message' ] recipient