NAME

       rchive - work with a local archive of Entrez document summaries

SYNOPSIS

       rchive  [-help]  [-strict] [-mixed] [-input filename] [-archive archive indices increment]
       [-delete archive indices increment]          [-index element]           [-fetch directory]
       [-stream directory]   [-flag strict|mixed|none]  [-gzip]  [-hash]  [-trie [type]]  [-padz]
       [-e2index [extras]]   [-e2invert archive]   [-join]    [-fuse]    [-merge directory field]
       [-promote directory field]  [-path directory] [-query query] [-exact query] [-title query]
       [-count query] [-counts query] [-version]

DESCRIPTION

       rchive creates, updates, or extracts records from  a  local  archive  of  Entrez  document
       summaries.

OPTIONS

   Processing Flags
       -strict
              Remove HTML and MathML tags.

       -mixed Allow mixed content XML.

   Data Source
       -input filename
              Read XML from file instead of standard input.

   Local Record Cache
       -archive archive indices increment
              Base  path  for saving individual XML files, plus paths for first- and second-level
              inverted index caches.

       -delete archive indices increment
              Same paths as -archive, for deleting inverted caches.

       -index element
              Use [parent/element@attribute^version] for identifier.

       -fetch directory
              Base path for retrieving XML files.

       -stream directory
              Path for retrieving compressed XML files (left compressed).

       -flag strict|mixed|none
              Alternative syntax for specifying the corresponding options.

       -gzip  Use compression for local XML files.

       -hash  Print UIDs and checksum values to standard output.

       -trie [type]
              Print archive (default), indices, increment, or posting[s] file path.

       -padz  Pad PMIDs with leading zeros to eight characters.

   Local Record Index
       -e2index [extras]
              Create Entrez index XML.  extras  (true  or  false;  false  by  default)  indicates
              whether to index extra fields.

       -e2invert archive
              Combined -e2index and -invert in archive.

       -join  Collect subsets of inverted index files.

       -fuse  Combine subsets of inverted index files.

       -merge directory field
              Combine inverted indices, dividing by term prefix.

       -promote directory field
              Create term lists and posting files.

       -path directory
              Path to postings directory.

       -query query
              Search on words or phrases in Boolean formulas.

       -exact query
              Strict search for article round-tripping.

       -title query
              Exact search limited to indexed title field.

       -count query
              Print terms and counts, merging wildcards.

       -counts query
              Expand wildcards; print individual term counts.

   Documentation
       -help  Print usage information and some example argument combinations.

       -version
              Print version number.

SEE ALSO

       archive-pmc(1),    custom-index(1),    fetch-pmc(1),   fetch-pubmed(1),   index-extras(1),
       index-pubmed(1), pm-refresh(1), stream-pubmed(1), xtract(1).