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Dedicated Java System Properties

The pre-compiled installer "understands" a couple of system properties given to the JVM at runtime.

At the command line, they can be given as -D<propertyname>=<value>.

The following property names and their according values are known to an IzPack installer at runtime:

NamePossible valuesDefaultRequiredDescription
MULTIINSTANCEyes | nonono

There is a built-in feature of popping up a message which asks the user whether an already running instance of the same installer should be ignored or rather whether to abort. This can be inconvenient for some use cases (clustering, sub-calls when an installer calls itself with different options,...).

This option allows to disable this behavior at compile time, the default of enabling it should be unchanged.

The value yes means to override the default behavior and allow multiple instances of an installer.

Since: IzPack 5.0 RC5

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