.\" Copyright (c) 2000 Whistle Communications, Inc.
.\" All rights reserved.
.\" 
.\" Subject to the following obligations and disclaimer of warranty, use and
.\" redistribution of this software, in source or object code forms, with or
.\" without modifications are expressly permitted by Whistle Communications;
.\" provided, however, that:
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.\"    such appears in the above copyright notice or in the software.
.\" 
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.\" Author: Archie Cobbs <archie@whistle.com>
.\"
.Dd June 23, 2000
.Dt suck 1
.Dt blow 1
.Os BSD 4
.Sh NAME
.Nm suck ,
.Nm blow
.Nd "transfer data over a TCP connection"
.Sh SYNOPSIS
.Nm suck
.Op Fl v
.Op Fl p Ar port
.Op Ar remote-ip
.Nm blow
.Op Fl v
.Op Fl p Ar port
.Op Ar remote-ip
.Sh DESCRIPTION
.Nm Suck
and
.Nm blow
are simple programs used to transfer data over a TCP connection.
.Nm Blow
is the originator of the data, which is read from standard input, while
.Nm suck
is the recipient of the data, which is written to standard output.
.Pp
Either program may originate the TCP connection which is used for the transfer;
whichever program is supplied with the
.Ar remote-ip
argument will be the originator.
The other program is expected to have already been started, with no
.Ar remote-ip
argument, causing it to await a connection from the peer.
.Pp
These programs are often useful in conjunction with archiving programs such as
.Xr tar 1 .
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl v
Increased verbosity.
.It Fl p
Specify an alternate TCP port to use. The default port is 6060.
.El
.Sh EXAMPLES
To transfer the directory hierarchy
.Dv mystuff
from machine A to machine B, first on machine B:
.Bd -literal -offset indent
[machineB] $ suck | tar xvf -
.Ed
.Pp
and then on machine A:
.Bd -literal -offset indent
[machineA] $ tar cvf - mystuff | blow machineB
.Ed
.Pp
If machine B was behind a firewall, you could do this instead:
.Bd -literal -offset indent
[machineA] $ tar cvf - mystuff | blow
.Ed
.Pp
and then on machine B:
.Bd -literal -offset indent
[machineB] $ suck machineA | tar xvf -
.Ed
.Sh SEE ALSO
.Xr cpio 1 ,
.Xr tar 1
.Sh AUTHORS
.An Archie Cobbs Aq archie@whistle.com