Login or Register to Ask a Question and Join Our Community

Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

java_home(1) [osx man page]

java_home(1)						      General Commands Manual						      java_home(1)

NAME

       java_home - return a value for $JAVA_HOME

SYNOPSIS

       /usr/libexec/java_home [options]

DESCRIPTION

       The  java_home  command	returns  a  path suitable for setting the JAVA_HOME 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  avail-
       able.  By default, if no constraints match the available list of JVMs, the default order is used.  The path is printed to standard output.

OPTIONS

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

       -a or --arch  architecture
	      Filters the returned JVMs by the architecture they support. Example architectures: "i386", "x86_64", or "ppc".

       -d or --datamodel  datamodel
	      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 architecture.

       -t or --task  task
	      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  appli-
	      cation. Supported tasks: "Applets", "WebStart", "BundledApp", "JNI" and "CommandLine". The default task is "CommandLine".

       -F or --failfast
	      Immediately fails when filters return no JVMs; does not print out the path to the default $JAVA_HOME.

       --exec  command ...
	      Executes the command at $JAVA_HOME/bin/<command> and passes the remaining arguments. Any arguments to select which $JAVA_HOME to use
	      must precede the --exec option.

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

       -V or --verbose
	      Prints the matching list of JVMs and architectures to stderr.

       -h or --help
	      Brief usage information.

USAGE

       /usr/libexec/java_home helps users set a $JAVA_HOME 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
       $JAVA_HOME/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 JAVA_HOME=`/usr/libexec/java_home`

       Usage for csh-style shells:
	      % setenv JAVA_HOME `/usr/libexec/java_home`

								  04 August 2010						      java_home(1)

Check Out this Related Man Page

AIRPORT-MODEM(1)					      General Commands Manual						  AIRPORT-MODEM(1)

NAME

       airport-modem  - Modem monitoring and hangup utility for the original Apple AirPort Base Station ("Graphite"), the Lucent RG-1000 base sta-
       tion and the Apple Airport Extreme base station

SYNOPSIS

       airport-modem

DESCRIPTION

       airport-modem allows you to monitor the state of the internal modem of your base station and to start/stop the modem connection.

       On the AirPort Extreme base station, the modem utility can also display the approximate duration of the modem connection.

OPTIONS

       airport-modem accepts no command-line options. airport-modem is a wrapper script around the AirportBaseStationHangup.jar jar  file  located
       in /usr/share/java/airport-utils.

       You  can set the JAVACMD environment variable to use a specific JVM instead of the one chosen by the wrapper script. Set the DEBUG environ-
       ment variable to 1 to get the debug output from the wrapper script.

ENVIRONMENT VARIABLES

       DEBUG  Set this variable to 1 to get the debug output from the wrapper script.

       JAVACMD
	      The full path to the Java Virtual Machine to use.  By  default,  the  wrapper  uses  JAVACMD;  if  it  is  not  set,  it	looks  for
	      JAVA_BINDIR/java, then for JAVA_HOME/bin/java before looking for a java executable in the PATH. In the latter case, the JVM used can
	      be configured using the Debian alternatives system (see update-alternatives(8)).

       JAVA_HOME
	      The full path where your JDK/JRE is installed.

       JAVA_BINDIR
	      The full path to the directory where the java executable is located.

       JAVA_ARGS
	      Extra command-line arguments to be passed to the Java Virtual Machine.

AUTHOR

       airport-modem was written by Jon Sevy <jsevy@cs.drexel.edu>.

       This manual page was written by Julien BLACHE <jblache@debian.org>, for the Debian project (but may be used by others).

								   May 20, 2006 						  AIRPORT-MODEM(1)
Man Page