htdig(1)

NAME

   htdig - retrieve HTML documents for ht://Dig search engine

SYNOPSIS

   htdig [options]

DESCRIPTION

   Htdig  retrieves  HTML  documents  using  the HTTP protocol and gathers
   information from these documents which can  later  be  used  to  search
   these documents. This program can be referred to as the search robot.

OPTIONS

   -      Get the list of URLs to start indexing from standard input. This
          will override the default parameter start_url specified  in  the
          config file  and the file supplied to the -m option.

   -a     Use  alternate  work  files.  Tells  htdig  to  append  .work to
          database files, causing a second copy  of  the  database  to  be
          built.  This  allows  the  original files to be used by htsearch
          during the indexing run.

   -c configfile
          Use the specified configfile instead of the default.

   -h maxhops
          Restrict the dig to documents that are  at  most  maxhops  links
          away from the starting document. This only works if option -i is
          also given.

   -i     Initial. Do not use any old databases.  Old  databases  will  be
          erased before running the program.

   -m filename
          Minimal  run.  Only  index  the URLs given in the file filename,
          ignoring all others. URLs in the file should  be  formatted  one
          URL per line.

   -s     Print statistics about the dig after completion.

   -t     Create  an ASCII version of the document database. This database
          is easy to parse with other programs so that information can  be
          extracted  from  it for purposes other than searching. One could
          gather some interesting statistics from this database.

          Fieldname                           Value
              u       URL
              t       Title
              a       State
                      (0 normal, 1 not found, 2 not indexed, 3 obsolete)
              m       Time of last modification reported by the server
              s       Document Size in bytes
              H       Excerpt of the document
              h       Meta Description
              l       Time of last retrieval
              L       Count of links in the document or  of outgoing links
              b       Number of links to the document, also called
                      incoming links or backlinks
              c       Hop count of this document
              g       Signature of this document
                      (used to detect duplicates)
              e       E-Mail address to use for a notification from htnotify

              n       Date on which such notification is sent
              S       Subject of the notifcation message
              d       The text of Incoming links pointing to this document
                      (e.g. <a href="docURL">description</a>)
              A       Anchors in the document (i.e. <A NAME=...)

   -u username:password
          Tells htdig to send the supplied username and password with each
          HTTP  request. The credentials will be encoded using the Basic
          authentication method. There HAS to be a colon (:)  between  the
          username and password.

   -v     Verbose mode. This increases the verbosity of the program. Using
          more than 2 is probably only useful for debugging purposes.  The
          default  verbose  mode (using only one -v) gives a nice progress
          report while digging. Please consult the section  below  on  the
          exact format of the progress report.

   FORMAT OF THE PROGRESS REPORT GIVEN IN VERBOSE MODE
          A  line is shown for each URL, with 3 numbers before the URL and
          some symbols after the URL. The first number is  the  number  of
          documents  parsed  so  far,  the  second  is  the DocID for this
          document, and the third is the hop count of the document (number
          of  hops  from one of the start_url documents). Signification of
          the symbols printed after the url:

          "*" is printed for a link already visited

          "+" is printed for a new link just queued

          "-" is output for a  link  rejected  for  any  of  a  number  of
          reasons.  To  find  out  what those reasons are, you need to run
          htdig with at least 3 -v options, i.e. -vvv.

   If there are no "*", "+" or "-" symbols after the URL, it doesn't  mean
   the  document  was  not  parsed or was empty, but only that no links to
   other documents were found within it. With more verbose  output,  these
   symbols will get interspersed in several lines of debugging output.

   FILES

   /etc/htdig/htdig.conf
          The default configuration file.

SEE ALSO

   Please   refer   to   the   HTML   pages  (in  the  htdig-doc  package)
   /usr/share/doc/htdig-doc/html/index.html   and   the    manual    pages
   htdigconfig(8)  ,  htmerge(1) , htnotify(1) , htsearch(1) and rundig(1)
   for a detailed description of ht://Dig and its commands.

AUTHOR

   This manual page was written by Christian Schwarz, modified by Stijn de
   Bekker. It is updated and maintained by Robert Ribnitz and based on the
   HTML documentation of ht://Dig.

                             21 July 1997                         htdig(1)

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