How to Find JRE installed in linux machine..? Post: 302163341

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LEARN ABOUT DEBIAN

update-java-alternatives

UPDATE-JAVA-ALTERNATIVES(8)				      System Manager's Manual				       UPDATE-JAVA-ALTERNATIVES(8)

NAME

       update-java-alternatives - update alternatives for jre/sdk installations

SYNOPSIS

       update-java-alternatives [--jre] [--plugin] [-t|--test|-v|--verbose]
	     -l|--list [<jname>]
	     -s|--set <jname>
	     -a|--auto
	     -h|-?|--help

DESCRIPTION

       update-java-alternatives  updates  all alternatives belonging to one runtime or development kit for the Java language.  A package does pro-
       vide these information of it's alternatives in /usr/lib/jvm/.<jname>.jinfo.

OPTIONS

       -l|--list [<jname>]
	      List all installed packages (or just <jname>) providing information to set a bunch of java alternatives. Verbose output  shows  each
	      alternative provided by the packages.

       -a|--auto
	      Switch all alternatives of registered jre/sdk installations to automatic mode.

       -s|--set <jname>
	      Set all alternatives of the registered jre/sdk installation to the program path provided by the <jname> installation.

       --jre  Limit the actions to alternatives belong to a runtime environment, not a development kit.

       --jre-headless
	      Limit the actions to alternatives belong to the headless part of a runtime environment.

       --plugin
	      Limit the actions to alternatives providing browser plugins.

       -h|--help
	      Display a help message.

       -t|--test
	      Don't  actually do anything, just say what would be done.  The implementation status of this option is the same as for update-alter-
	      natives (not implemented).

       -v|--verbose
	      Verbose output.

FILES

       /usr/lib/jvm/.*.jinfo
	      A text file describing a jre/sdk installation. Consists of some variables of the form <var>=<value> and a list  of  alternatives	of
	      the form jre|jdk <name> <path>.

AUTHOR

       update-java-alternatives and this manual page was written by Matthias Klose <doko@ubuntu.com>.

								     May 2006					       UPDATE-JAVA-ALTERNATIVES(8)

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