As an additional way to launch processes on Linux, the `jdk.lang.Process.launchMechanism` property can be set to `POSIX_SPAWN`. This option has been available for a long time on other *nix platforms. The default launch mechanism (`VFORK`) on Linux is unchanged, so this additional option does not affect existing installations.

`POSIX_SPAWN` mitigates rare pathological cases when spawning child processes, but it has not yet been excessively tested. Prudence is advised when using `POSIX_SPAWN` in productive installations.