javahome(1) javahome(1)

NAME
       javahome - return a value for $JAVAHOME


SYNOPSIS
       //uussrr//lliibbeexxeecc//jjaavvaahhoommee [options]


DESCRIPTION
       The jjaavvaahhoommee command returns a path suitable for setting the JAVAHOME
       environment variable.  It determines this path from the user's  enabled
       and  preferred  JVMs  in  the Java Preferences application.  Additional
       constraints may be provided to filter the list of JVMs  available.   By
       default,  if  no  constraints  match  the  available  list of JVMs, the
       default order is used.  The path is printed to standard output.


OOPPTTIIOONNSS
       -vv or --vveerrssiioonn  vveerrssiioonn
              Filters the returned JVMs  by  the  major  platform  version  in
              "JVMVersion" form. Example versions: "1.5+", or "1.6*".


       -aa or --aarrcchh  aarrcchhiitteeccttuurree
              Filters  the  returned  JVMs  by  the architecture they support.
              Example architectures: "i386", "x8664", or "ppc".


       -dd or --ddaattaammooddeell  ddaattaammooddeell
              Filters the returned JVMs capable of running  in  32  or  64-bit
              mode.  Supported  datamodels:  "-d32"  and  "-d64". Specifying a
              datamodel is synonymous with specifying a  particular  architec-
              ture.


       -tt or --ttaasskk  ttaasskk
              Selects from the list of JVMs which can run a specific task. The
              order of each of these lists is  set  by  the  Java  Preferences
              application.   Supported  tasks:  "Applets",  "WebStart",  "Bun-
              dledApp", "JNI" and "CommandLine". The default task is "Command-
              Line".


       -FF or --ffaaiillffaasstt
              Immediately  fails  when  filters return no JVMs; does not print
              out the path to the default $JAVAHOME.


       --eexxeecc  ccoommmmaanndd ......
              Executes the command at $JAVAHOME/bin/ and passes  the
              remaining arguments. Any arguments to select which $JAVAHOME to
              use must precede the -exec option.


       -XX or --xxmmll
              Prints the list of selected JVMs and associated properties as an
              XML plist to stdout.


       -VV or --vveerrbboossee
              Prints the matching list of JVMs and architectures to stderr.


       -hh or --hheellpp
              Brief usage information.


UUSSAAGGEE
       //uussrr//lliibbeexxeecc//jjaavvaahhoommee  helps  users set a $JAVAHOME in their login rc
       files, or provides a way for command-line Java tools to  use  the  most
       appropriate  JVM  which  can  satisfy a minimum version or architecture
       requirement. The -exec argument  can  invoke  tools  in  the  selected
       $JAVAHOME/bin  directory,  which  is useful for starting Java command-
       line tools from launchd plists without hardcoding the full path to  the
       Java command-line tool.


       Usage for bash-style shells:
              $ export JAVAHOME=`/usr/libexec/javahome`

       Usage for csh-style shells:
              % setenv JAVAHOME `/usr/libexec/javahome`




                                04 August 2010                    javahome(1)