X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=doc%2Fbundles.texi;h=df0b554c3094d673ef1d7caefaded598b958acc0;hb=bb7fe5e770586be9f44a8a7f3321a3139d5345bb;hp=21b31046a1ae1c7d1d0aec48f6f5f76757b86c4c;hpb=2ac16acad8de20005793cbadd61068d38dc3b0ca;p=nncp.git diff --git a/doc/bundles.texi b/doc/bundles.texi index 21b3104..df0b554 100644 --- a/doc/bundles.texi +++ b/doc/bundles.texi @@ -1,39 +1,42 @@ @node Bundles +@cindex bundles +@cindex tapes +@cindex streaming media @unnumbered Bundles -Usual @ref{nncp-xfer} command requires filesystem it can operate on. -That presumes random access media storage usage, like hard drives, USB -flash drives and similar. But media like CD-ROM and especially tape -drives are sequential by nature. You can prepare intermediate directory -for recording to CD-ROM disc/tape, but that requires additional storage -and is inconvenient. +Usual @command{@ref{nncp-xfer}} command requires filesystem it can +operate on. That presumes random access media storage usage, like hard +drives, USB flash drives and similar. But media like CD-ROM and +especially tape drives are sequential by nature. You can prepare +intermediate directory for recording to CD-ROM disc/tape, but that +requires additional storage and is inconvenient. -Bundles, created with @ref{nncp-bundle} command are convenient -alternative to ordinary @command{nncp-xfer}. Bundle is just a collection -of @ref{Encrypted, encrypted packets}, stream of packets. It could be -sequentially streamed for recording and digested back. +Bundles, created with @command{@ref{nncp-bundle}} command are convenient +alternative to ordinary @command{@ref{nncp-xfer}}. Bundle is just a +collection of @ref{Encrypted, encrypted packets}, stream of packets. It +could be sequentially streamed for recording and digested back. @itemize @item They do not require intermediate storage before recording on either CD-ROM or tape drive. -@verbatim +@example $ nncp-bundle -tx SOMENODE | cdrecord -tao - # record directly to CD $ nncp-bundle -tx SOMENODE | dd of=/dev/sa0 bs=10240 # record directly to tape $ dd if=/dev/cd0 bs=2048 | nncp-bundle -rx # read directly from CD $ dd if=/dev/sa0 bs=10240 | nncp-bundle -rx # read directly from tape -@end verbatim +@end example @item They do not require filesystem existence to deal with, simplifying administration when operating in heterogeneous systems with varying filesystems. No @command{mount}/@command{umount}, @command{zpool import}/@command{zpool export} and struggling with file permissions. -@verbatim +@example $ nncp-bundle -tx SOMENODE | dd of=/dev/da0 bs=1M # record directly to # hard/flash drive $ dd if=/dev/da0 bs=1M | nncp-bundle -rx # read directly from drive -@end verbatim +@end example @item This is the fastest way to record outbound packets for offline transmission -- sequential write is always faster, when no @@ -48,8 +51,11 @@ can contain mix of various recipients. @end itemize +@pindex pax +@pindex tar Technically bundle is valid POSIX.1-2001 @url{https://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html#tag_20_92_13_01, pax archive} with directory/files hierarchy identical to that is used in -@ref{nncp-xfer}: @file{NNCP/RECIPIENT/SENDER/PACKET}. So bundle can also -be created by manual tar-ing of @command{nncp-xfer} resulting directory. +@command{@ref{nncp-xfer}}: @file{NNCP/RECIPIENT/SENDER/PACKET}. +So bundle can also be created by manual tar-ing of +@command{@ref{nncp-xfer}} resulting directory.