Linux Commands Examples

A great documentation place for Linux commands


update alternatives for jre/sdk installations


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

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


-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.


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.


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


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


Limit the actions to alternatives providing browser plugins.


Display a help message.


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


Verbose output.



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>.


update-java-alternatives and this manual page was written by Matthias Klose <doko[:at:]ubuntu[:dot:]com>.

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