NAME
    xmlcatalog - Command line tool to parse and manipulate XML or SGML cat-
    alog files.

SYNOPSIS
    xmlcatalog [--shell | --create | --add type orig replace
   | --del values | --noout | --verbose] [catalogfile]
   [entities]

INTRODUCTION
 xmlcatalog is a command line application allowing users to monitor and
    manipulate XML and SGML catalogs. It is included in libxml2.

    Its functions can be invoked from a single command from the command
    line, or it can perform multiple functions in interactive mode. It can
    operate on both XML and SGML files.

COMMAND LINE OPTIONS
    --shell filename
    Run a shell allowing interactive queries on catalog file file-
    name.

    --create filename
    Create a new XML catalog. Outputs to stdout, ignoring filename
    unless --noout is used, in which case it creates a new catalog
    file filename.

    --add 'type' 'orig' 'replace' filename
    Add an entry to catalog file filename. type indicates the type
    of entry. Possible types are 'public', 'system', 'rewriteSys-
    tem', 'delegatePublic', 'delegateSystem'amd 'rewriteURI'. 'orig'
    is the original reference to be replaced, and 'replace' is the
    URI of the replacement entity to be used. The --add option will
    not overwrite filename, outputing to stdout, unless --noout is
    used. The --add will always take three parameters even if some
    of the XML catalog constructs will have only a single argument.

    If the --add option is used following the --sgml option, only a
    single argument,  a filename, is used. This is used to add the
    name of a catalog file to an SGML supercatalog, a file that con-
    tains references to other included SGML catalog files.

    --del 'values' filename
    Remove entries from the catalog file filename matching 'values'.
    The --del option will not overwrite filename, outputing to std-
    out, unless --noout is used.

    --noout
    Save output to the named file rather than outputing to stdout.

    --sgml Uses SGML Super catalogs for --add and --del options

    -v or --verbose
    output debugging information.

SHELL COMMANDS
    Invoking  xmlcatalog with the --shell filename option opens a command
    line shell allowing interactive access to the catalog file identified
    by filename. Invoking the shell provides a command line prompt after
    which commands can be entered.

    public 'PublicID'
    Execute a public identifier lookup of the catalog entry for
    'PublicID'. The corresponding entry will be output to the com-
    mand line.

    system 'SystemID'
    Execute a public identifier lookup of the catalog entry for
    'SystemID'. The corresponding entry will be output to the com-
    mand line.

    add 'type' 'orig' 'replace'
    Add an entry to the catalog file. type indicates  the type of
    entry. Possible types are 'public', 'system', 'rewriteSystem',
    'delegatePublic' and 'delegateSystem'. 'orig' is  the original
    reference  to be  replaced, and  'replace' is the URI of the
    replacement entity to be used.

    del 'values'
    Remove the catalog entry corresponding to 'values'.

    dump  Print the current catalog.

    debug Print debugging statements showing the steps xmlcatalog is exe-
    cuting.

    quiet Stop printing debugging statements.

    exit  Quit the shell.

RETURN VALUES
    xmlcatalog's return codes provide information that can be used when
    calling it from scripts.

    0: normal

    1: Failed to remove an entry from the catalog

    2: Failed to save to the catalog, check file permissions

    3: Failed to add an entry to the catalog

    4: Failed to lookup and entry in the catalog

REFERENCES
    libxml web page: http://www.xmlsoft.org/

    libxml catalog support web page:: http://www.xmlsoft.org/catalog.html

    James Clark's SGML catalog page:: http://www.jclark.com/sp/catalog.htm

    OASIS XML catalog specification: : http://www.oasis-open.org/commit-
    tees/entity/spec.html

AUTHOR
    John Fleck.