Ubuntu Feisty 7.04 manual page repository

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Provided by: cnews_cr.g7-40_i386



        newshist - extract history line for news article(s)
        newsdaily - maintain news log files and report problems
        newswatch - keep an eye on news system for difficulties
        newsboot - clean up news debris on reboot
        locknews - lock news system
        addgroup, delgroup - add and delete newsgroups, locally only
        adddirs - make any missing directories for active newsgroups
        act.to.times - create active.times file for news readers
        histfrom, newsfrom - list news arriving over specific time range
        addmissing - add missing news articles to history file


        /usr/lib/news/maint/newshist msgid ...
        /usr/lib/news/maint/newswatch [ spaceunit spacemin [ inbatchmax ] ]
        /usr/lib/news/maint/locknews [ -v ]
        /usr/lib/news/maint/addgroup group {y|n|m|x|=realgroup}
        /usr/lib/news/maint/delgroup group
        /usr/lib/news/maint/act.to.times activefile
        /usr/lib/news/maint/histfrom startdate [ enddate ]
        /usr/lib/news/maint/newsfrom startdate [ enddate ]
        /usr/lib/news/maint/addmissing [ -d ] [ -v ]


        These  programs are utilities useful in maintaining a C News system and
        diagnosing problems in it.
        Newshist prints the history line  for  each  article  identified  by  a
        Newsdaily  performs  minor  maintenance chores that typically should be
        done once a day for the news system: saving copies  of  log  files  and
        truncating  them,  reporting logged errors, checking for anomalies sug‐
        gesting something is wrong, and cleaning out leftover files.  Newsdaily
        saves  one  generation  of  old  log files and three generations of old
        errlog and batchlog files.  It reports problems via report(8CN).
        Newswatch looks for indications of news  problems  on  a  shorter  time
        scale  than  those  reported by newsdaily, notably strangely-persistent
        lock files that may indicate a news-system failure.  If  spaceunit  and
        spacemin  are  specified, newswatch checks the incoming, articles, con‐
        trol, and outbound areas to confirm that there is  room  for  at  least
        spacemin files, each of length spaceunit bytes, in each, and reports it
        if not.  If inbatchmax is specified, newswatch inspects  the  incoming-
        news spooling area and reports if more than inbatchmax files are await‐
        ing  processing.   Newswatch  delivers  its   report,   if   any,   via
        report(8CN).   It  typically  should  be run fairly frequently, perhaps
        once or twice an hour.
        Newsboot should be run from  /etc/rc  or  the  system’s  equivalent  on
        reboot.   It cleans up files that the news system might have left lying
        about if the system crashed while news was being processed, notably old
        lock files.
        Locknews  locks the news system (retrying until it succeeds), starts up
        a shell ($SHELL if set, otherwise the system’s standard shell) with the
        PS1   and   prompt  environment  variables  prepended  with  executable
        reminders, and waits around to unlock the news system when  that  shell
        terminates.   This simplifies manual maintenance.  -v produces messages
        on standard error upon successful locking and unlocking; this  is  only
        needed  by  users  of  shells that import neither PS1 nor prompt to set
        their prompts, notably C shells.
        Addgroup and delgroup respectively add a newsgroup  (with  a  specified
newsdb(5)]) and
        delete a newsgroup manually, with proper locking.  The effect is purely
        local;  no  control message (to propagate the change to other machines)
        is sent.
        Adddirs sweeps through the active file checking that directories  exist
        for  all newsgroups.  (Relaynews will create directories as needed, but
        some user-interface software gets upset if a newsgroup exists  but  its
        directory does not.)  This is mostly useful when adding groups in bulk,
        based on another site’s active file.
        Act.to.times emits (on standard output) a new  active.times  file  (see
newsdb(5))  based  on the contents of activefile, which should normally
        be /var/lib/news/active.
        Histfrom emits (on standard output) all  history  lines  for  unexpired
        articles  arriving  between  startdate  and enddate.  The dates must be
        acceptable to getabsdate (see newsaux(8CN)).  The  default  enddate  is
        Newsfrom  runs  histfrom  and processes its output to produce a list of
        absolute pathnames of articles arriving between startdate  and  enddate
        (default now).
        Addmissing  scans  the  history  file and the news-article tree to find
        articles that are not in the history file, and adds them  to  the  file
        and  the  dbz database.  If the -d option is given, addmissing rebuilds
        the dbz database from scratch after adding the missing articles to  the
        history file; this is a convenience for use in disaster-recovery situa‐
        tions where manual repairs to the history file have rendered  the  file
        incomplete  and  the  dbz database invalid.  If the -v option is given,
        addmissing reports how many missing articles were found (and shows  the
        resulting history lines, if there are not too many) on standard output.


        /var/lib/news/history   history file
        /var/lib/news/history.pagdbz database for history file
        /var/lib/news/history.dirdbz database for history file
        /var/lib/news/log       current news log
        /var/lib/news/log.o     previous news log
        /var/lib/news/errlog    current news-error log
        /var/lib/news/errlog.o* old news-error logs
        /var/lib/news/batchlog  current news-batcher log
        /var/lib/news/batchlog.o*old news-batcher logs
        /var/spool/news/in.cominginput-spooling area
        /var/spool/news/out.goingoutput-batching area
        /var/lib/news/watchtime last time newswatch was run
        /var/lib/news/active    list of current newsgroups
        /var/lib/news/active.oldbackup copy created by addgroup and delgroup
        /bin/sh                 standard Unix shell
        /bin/rc                 standard Plan 9 shell
        cnewsdo(8CN),  expire(8CN),  newsbatch(8CN),  report(8CN),  rnews(8CN),


        Locknews complains and exits if it is unable to lock  the  news  system
        due to inadequate permissions.
        Addmissing complains and exits if it is unable to lock the news system,
        if expire appears to be running, or if there is not enough space for  a
        temporary  copy  of  the  history file and database.  It also notes the
        presence of articles which did not have intelligible headers (which are
        placed  into  history with an entry specifying immediate expiry).  Com‐
        plaints from it about articles being  ‘‘already  present’’  indicate  a
        corrupt  history  file  rather than merely missing articles; a complete
        rebuild is indicated if the offending entries cannot be identified  and
        removed manually.


        Written  as  part of the C News project by Henry Spencer and Geoff Col‐


        Delgroup does not remove files  or  directories  from  /var/spool/news,
        although it prints a reminder to do so.
        Addmissing  balks at dealing with articles which are already in history
        but with an incomplete list of pathnames.  This is very hard to fix.
        Addmissing will falsely think articles are missing—leading to the prob‐
        lem above—if a newsgroup name has a component longer than 14 characters
        on a system which limits directory entries to 14.  This too  is  fairly
        hard to fix.
        Various  nuisances  can  result if the maintenance utilities are run as
        root rather than as the owner of the news database.  It’s difficult  to
        defend against this.
                                  17 Sept 1994                   NEWSMAINT(8cn)


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