 Usage: opatch [ -help ] [ -r[eport] ] [ command ]

            command := apply
                       lsinventory
                       napply
                       nrollback
                       rollback
                       query
                       version 
                       prereq
                       util
 
 <global_arguments> := -help       Displays the help message for the command.
                       -report     Print the actions without executing.

 example:
   'opatch -help'
   'opatch -help -fmw'
   'opatch auto -help'
   'opatch apply -help'
   'opatch lsinventory -help'
   'opatch napply -help'
   'opatch nrollback -help'
   'opatch rollback -help'
   'opatch prereq -help'
   'opatch util -help'
