alias xop="java -jar xop.jar"


usage: xop [<options>] <xoperator-expression>

options include: (default given as example, comments follow #)
   -byname http://ercato.com/xmlns/ErcatoCore name # null name w/o namespace
                  # option to force matching of some nodes, eg., by id
   -match  match  # match|text|auto  subtle switch 
   -script off    # off|on           on always produces xml

examples for xoperator-expression:
   a.xml + b.xml                  # sum of files
   - + http://localhost/a.xml     # stdin plus network resource
   a + b + c                      # three files
   a = b - c                      # creates file a, no stdout
   (a = b - c), a                 # creates file a, with stdout
   a - a == 0                     # produces true, scripts may test true/false
   (a + b + b) == (a + b)         # produces true
   ((a = b + c) - (b = a + b))    # etc.

     # spaces around operators are required.
     # operators: '+', '-', '==', '!=', '0', '=', ',', '(', ')'
     # you may have to quote '(...)' in most shells.
     # xops may be piped together using '-'.

sample:
   xop -script on "new.xml = (a + (b + old.xml))"

copyright:
   (c) 2009 Living Pages Research GmbH, Munich, Germany. living-pages.de