


     RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))	 XXXXEEEENNNNIIIIXXXX 3333....0000 ((((11117777 MMMMaaaarrrrcccchhhh 1111999999992222))))	  RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))



     NNNNAAAAMMMMEEEE
	  relaynews - store and forward netnews articles

     SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssssbbbbiiiinnnn////rrrreeeellllaaaayyyy////rrrreeeellllaaaayyyynnnneeeewwwwssss [ ----ggggiiiinnnnrrrrssssuuuu ] [ ----aaaa dupsite ]
	  [ ----bbbb xrefsite	] [ ----dddd ffffhhhhllllmmmmtttt ] [ ----oooo days ] [ ----xxxx	excluded-site
	  ]

     DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
	  _R_e_l_a_y_n_e_w_s installs locally and broadcasts (network) news
	  articles read	from its standard input.  Typically the
	  articles will	be in a	batch (see _n_e_w_s(5)), which must	_n_o_t be
	  compressed (see _c_o_m_p_r_e_s_s(1)).	 Articles are usually queued
	  for transmission to one's netnews neighbours via
	  _n_e_w_s_b_a_t_c_h(8) and thence via _u_u_x(1) or	_m_a_i_l(1).

	  ----dddd turns on debugging	of ffffiling, hhhheaders, llllocking, mmmmatching,
	  ttttransmission.	 ----rrrr redirects stdout and stderr	to
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////lllloooogggg and	////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////eeeerrrrrrrrlllloooogggg.  ----iiii redirects
	  stdout only to ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////lllloooogggg.  ----nnnn	enables	``NNTP mode''
	  in which history entries are generated as articles are
	  rejected.  ----ssss	makes discarding an article a serious matter,
	  justifying a non-zero	exit status (for the benefit of
	  _i_n_e_w_s).  ----uuuu unlinks (removes)	any filename arguments after
	  successful processing	and if the filenames contain no
	  slashes and if _r_e_l_a_y_n_e_w_s was invoked in
	  ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss////iiiinnnn....ccccoooommmmiiiinnnngggg.  ----oooo causes	articles with dates
	  (in DDDDaaaatttteeee:::: headers) more than _d_a_y_s old	to be dropped (usually
	  to stop accidentally-retransmitted old articles).  ----xxxx
	  excludes _e_x_c_l_u_d_e_d-_s_i_t_e from the list of netnews neighbours
	  to receive article(s).

	  ----gggg causes _r_e_l_a_y_n_e_w_s to always	generate an XXXXrrrreeeeffff:::: header per
	  article; ----bbbb causes _r_e_l_a_y_n_e_w_s to not update _a_c_t_i_v_e and	file
	  articles received directly from _x_r_e_f_s_i_t_e under the groups
	  and article numbers found in incoming	XXXXrrrreeeeffff:::: headers.	These
	  two options provide the basis	for a news mirroring facility.
	  ----aaaa similarly causes _a_c_t_i_v_e to	not be updated and duplicate
	  articles received directly from _d_u_p_s_i_t_e to be	accepted, but
	  filed	under the filenames found in their existing _h_i_s_t_o_r_y
	  entries.  It may be used to recover a	news spool, given
	  recent _a_c_t_i_v_e	and _h_i_s_t_o_r_y files.

	  _C_o_n_t_r_o_l _m_e_s_s_a_g_e_s, recognised by their	CCCCoooonnnnttttrrrroooollll:::: headers (or
	  _f_o_r _b_a_c_k_w_a_r_d _c_o_m_p_a_t_i_b_i_l_i_t_y _O_N_L_Y a NNNNeeeewwwwssssggggrrrroooouuuuppppssss::::	header
	  containing a single newsgroup	ending in ....ccccttttllll), are filed
	  under	the ccccoooonnnnttttrrrroooollll pseudo-group only, but are forwarded as
	  usual, by examining their NNNNeeeewwwwssssggggrrrroooouuuuppppssss::::	and DDDDiiiissssttttrrrriiiibbbbuuuuttttiiiioooonnnn::::
	  headers.  Note that posting to the ccccoooonnnnttttrrrroooollll pseudo-group will
	  not cause a message to be treated as a control message;
	  ccccoooonnnnttttrrrroooollll is not a real	newsgroup.




     Page 1					      (printed 6/4/94)






     RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))	 XXXXEEEENNNNIIIIXXXX 3333....0000 ((((11117777 MMMMaaaarrrrcccchhhh 1111999999992222))))	  RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))



	  An article which contains an AAAAllllssssoooo----CCCCoooonnnnttttrrrroooollll:::: header is treated
	  normally except that the contents of the header are executed
	  as if	they were the contents of a CCCCoooonnnnttttrrrroooollll:::: header.  Such an
	  article is a form of _h_y_b_r_i_d _m_e_s_s_a_g_e since it functions as an
	  ordinary article yet also causes control functions to	be
	  executed.  The SSSSuuuuppppeeeerrrrsssseeeeddddeeeessss:::: header is a special case and is
	  rewritten internally _o_n_l_y to AAAAllllssssoooo----CCCCoooonnnnttttrrrroooollll:::: ccccaaaannnncccceeeellll.

	  Articles which contain no locally-known (to the _a_c_t_i_v_e file)
	  newsgroups yet accepted by the local subscription list are
	  filed	exactly	once, in the jjjjuuuunnnnkkkk pseudo-group,	and forwarded
	  as usual.  If	all newsgroups in the article are refused by
	  the local subscription list or are refused by	an xxxx in	_a_c_t_i_v_e
	  file entries,	then the article will be _d_i_s_c_a_r_d_e_d and not
	  filed	in jjjjuuuunnnnkkkk.

	  Locally-generated articles need not be permitted by the
	  local	subscription list but are otherwise processed
	  normally; this is for	backward compatibility and perhaps to
	  keep the local subscription list short by not	requiring
	  ggggeeeennnneeeerrrraaaallll and the like to be named.

     EEEEXXXXAAAAMMMMPPPPLLLLEEEESSSS
	  ccccdddd ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss////iiiinnnn....ccccoooommmmiiiinnnngggg;;;;	rrrreeeellllaaaayyyynnnneeeewwwwssss ----nnnnrrrruuuu ----oooo 7777 nnnnnnnnttttpppp....****
	       File and	forward	articles in batches that arrived by
	       NNTP, and remove	each batch upon	successfully
	       processing it.  Discard any articles more than a	week
	       old.

     FFFFIIIILLLLEEEESSSS
	  ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss     netnews article tree
	  ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss////ccccoooommmmpppp////uuuunnnniiiixxxx////wwwwiiiizzzzaaaarrrrddddssss
			      example newsgroup	directory (for
			      ccccoooommmmpppp....uuuunnnniiiixxxx....wwwwiiiizzzzaaaarrrrddddssss); such directories and
			      their ancestor directories will be
			      created automatically as needed
	  ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss////ccccoooommmmpppp////uuuunnnniiiixxxx////wwwwiiiizzzzaaaarrrrddddssss////11112222555566664444
			      example article file name
	  ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss////oooouuuutttt....ggggooooiiiinnnngggg////_s_y_s_t_e_m////ttttooooggggoooo
			      default ssssyyyyssss file FFFF, ffff and	IIII flags	batch
			      file name	(N.B.:
			      ////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss////oooouuuutttt....ggggooooiiiinnnngggg////_s_y_s_t_e_m will
			      _n_o_t be automatically created as needed)
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////ssssyyyyssss   determines who receives broadcast
			      netnews articles,	which ones, and	how
			      they are to be sent articles
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////aaaaccccttttiiiivvvveeee
			      contains locally-legal newsgroups	and
			      (un)moderated flag
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////hhhhiiiissssttttoooorrrryyyy
			      record of	articles received and mapping
			      of message-ids to	file names



     Page 2					      (printed 6/4/94)






     RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))	 XXXXEEEENNNNIIIIXXXX 3333....0000 ((((11117777 MMMMaaaarrrrcccchhhh 1111999999992222))))	  RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))



	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////hhhhiiiissssttttoooorrrryyyy....{{{{ddddiiiirrrr,,,,ppppaaaagggg}}}}
			      _d_b_m(3) index into	hhhhiiiissssttttoooorrrryyyy	by message-ids
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////wwwwhhhhooooaaaammmmiiii
			      if present, contains news	system's site
			      name, overriding any other host names
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////lllloooogggg   log of incoming articles
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////eeeerrrrrrrrlllloooogggg
			      log of errors, should be empty
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////bbbbiiiinnnn   system-specific directory	of programs to
			      override ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssssbbbbiiiinnnn	and its
			      subdirectories
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssssbbbbiiiinnnn////ccccttttllll
			      directory	of programs to implement
			      control messages
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssssbbbbiiiinnnn////rrrreeeellllaaaayyyy////rrrreeeellllaaaayyyynnnneeeewwwwssss
			      the lean,	mean news-relayin' machine
	  ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssssbbbbiiiinnnn////nnnneeeewwwwssssrrrreeeeppppllllyyyy
			      generates	a return address from article
			      headers

     SSSSEEEEEEEE AAAALLLLSSSSOOOO
	  _c_o_m_p_r_e_s_s(1), _m_a_i_l(1),	_u_u_x(1),	_d_b_m(3),	_n_e_w_s(5), _n_e_w_s_b_a_t_c_h(8)
	  ARPA Internet	RFCs 1036 and 850

     DDDDIIIIAAAAGGGGNNNNOOOOSSSSTTTTIIIICCCCSSSS
	  Usually found	in ////uuuussssrrrr////lllliiiibbbb////nnnneeeewwwwssss////eeeerrrrrrrrlllloooogggg.
	  _R_e_l_a_y_n_e_w_s's exit status is a bit vector of status bits; see
	  nnnneeeewwwwssss////iiiinnnncccclllluuuuddddeeee////nnnneeeewwwwssss....hhhh for the bit definitions.
	  If _r_e_l_a_y_n_e_w_s cannot establish	safe standard file descriptors
	  and standardise its environment (notably PATH, SHELL and
	  IFS),	probably due to	failure	of _m_a_l_l_o_c(3), it will exit
	  with status of 1 and without writing any complaints on
	  standard error (eeeerrrrrrrrlllloooogggg), as a	security precaution.

     HHHHIIIISSSSTTTTOOOORRRRYYYY
	  Written by Geoff Collyer at the University of	Toronto	as
	  part of the C	news project.

     BBBBUUUUGGGGSSSS
	  An article with a header that	does not fit entirely in a
	  static buffer	and on a machine without real links (e.g.
	  something like Eunice	but on a PDP-11) will be filed
	  incorrectly: any symbolic links under	////uuuussssrrrr////ssssppppoooooooollll////nnnneeeewwwwssss	will
	  point	at a non-existent filename.

	  A control message which cannot be filed in the ccccoooonnnnttttrrrroooollll
	  pseudo-group and which cannot	be filed in the	jjjjuuuunnnnkkkk pseudo-
	  group	because	jjjjuuuunnnnkkkk is	not in the _a_c_t_i_v_e file will generate
	  an error message which refers	to the groups in its
	  NNNNeeeewwwwssssggggrrrroooouuuuppppssss:::: header instead of	referring to the ccccoooonnnnttttrrrroooollll
	  pseudo-group.




     Page 3					      (printed 6/4/94)






     RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))	 XXXXEEEENNNNIIIIXXXX 3333....0000 ((((11117777 MMMMaaaarrrrcccchhhh 1111999999992222))))	  RRRREEEELLLLAAAAYYYYNNNNEEEEWWWWSSSS((((8888))))



	  _R_e_l_a_y_n_e_w_s could run faster in	some circumstances and would
	  be simpler if	CCCCoooonnnnttttrrrroooollll:::: were required to be the first header,
	  if present, and if NNNNeeeewwwwssssggggrrrroooouuuuppppssss:::: were required to be the next.

	  The whole control message and	hybrid message situation is a
	  festering bug.  Either control messages should be
	  eliminated, or all forms of backward compatibility should be
	  dropped (including CCCCoooonnnnttttrrrroooollll:::: and SSSSuuuuppppeeeerrrrsssseeeeddddeeeessss::::) and only	AAAAllllssssoooo----
	  CCCCoooonnnnttttrrrroooollll:::: should be supported.

	  Use of the ==== _a_c_t_i_v_e file flag	can result in a	cross-posted
	  article being	filed multiple times in	the same group,	though
	  with the XXXXrrrreeeeffff:::: header	set appropriately so that newsreaders
	  should suppress showing the redundant	links.









































     Page 4					      (printed 6/4/94)



