@node nncp-bundle
@pindex nncp-bundle
@section nncp-bundle

@example
$ nncp-bundle [options] -tx [-delete] NODE [NODE @dots{}] > ...
$ nncp-bundle [options] -rx -delete [-dryrun] [NODE @dots{}] < ...
$ nncp-bundle [options] -rx [-check] [-dryrun] [NODE @dots{}] < ...
@end example

With @option{-tx} option, this command creates @ref{Bundles, bundle} of
@ref{Encrypted, encrypted packets} from the spool directory and writes
it to @code{stdout}.

With @option{-rx} option, this command takes bundle from @code{stdin}
and copies all found packets for our node to the spool directory. Pay
attention that @strong{no} integrity checking is done by default. Modern
tape drives could easily provide too much throughput your CPU won't be
able to verify on the fly. So if you won't @ref{nncp-toss, toss}
received packets at the place, it is advisable either to run
@ref{nncp-check} utility for packets integrity verification, or to use
@option{-check} option to enable on the fly integrity check.

You can specify multiple @option{NODE} arguments, telling for what nodes
you want to create the stream, or take it from. If no nodes are
specified for @option{-rx} mode, then all packets aimed at us will be
processed.

When packets are sent through the stream, they are still kept in the
spool directory, because there is no assurance that they are transferred
to the media (media (CD-ROM, tape drive, raw hard drive) can end). If
you want to forcefully delete them (after they are successfully flushed
to @code{stdout}) anyway, use @option{-delete} option.

But you can verify produced stream after, by digesting it by yourself
with @option{-rx} and @option{-delete} options -- in that mode, stream
packets integrity will be checked and they will be deleted from the
spool if everything is good. So it is advisable to recheck your streams:

@example
$ nncp-bundle -tx ALICE BOB WHATEVER | cdrecord -tao -
$ dd if=/dev/cd0 bs=2048 | nncp-bundle -rx -delete
@end example

@option{-dryrun} option prevents any writes to the spool. This is
useful when you need to see what packets will pass by and possibly check
their integrity.