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npush(1)		    General Commands Manual		      npush(1)

NAME
       npush, npoll - copy files over TCP

SYNOPSIS
       npush [-b] [files...]

       npoll [hostname]

DESCRIPTION
       npush  and npoll	are tools to quickly copy files	over an	IP LAN.	 npush
       will send UDP multicast/broadcast packets to advertise that it is will-
       ing to send files, npoll	will look for these UDP	packets	and then  con-
       nect  to	 the sending machine.  The advantage is	that you don't have to
       type the	name of	the machine that you want to send  data	 to,  and  you
       don't have to type the name of the server.

       Optionally,  you	can tell npoll the name	of the server.	This is	useful
       if the server is	not in the same	LAN.

       If you do not give npush	any arguments, it will	copy  stdin  over  the
       network.	  npoll	 will in this case output the data to stdout.  To make
       this work in pipes, the diagnostic messages are now output on stderr.

       npush will use TCP port 8002 for	its connections	and for	the UDP	 pack-
       ets.   npush  will  try	to advertise using IPv6	multicast, but it will
       fall back to IPv4 multicast and IPv4 broadcast (which was the only  op-
       tion before version 1.0).  Use the -b option to npush to	make sure that
       clients before version 1.0 can see the advertisements.

BUGS
       npush  will  call  tar only after it has	opened the connection.	If you
       forgot to specify and files or tried to	send  nonexistant  files,  tar
       will spew out error messages.  The peer will see	no error messages!

       No error	detection, error recovery or even decent error messages.

       The broadcast packets always go out over	the network interface with the
       default	route.	 This means that your PPP dialin server	will npush the
       broadcast packets to the	PPP interface.	You can	fix this by setting  a
       static route for	destination 255.255.255.255 to the LAN interface.

       Some routers are	stupid enough to forward the broadcast packets.

SEE ALSO
       ncp(1)

AUTHOR
       Felix 'Fefe' von	Leitner	<felix@fefe.de>

				  August 2000			      npush(1)

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