built-in function was extended to support Java's
System.err as parameters:
#!/usr/bin/jjs -fv var cmd = "mvn clean install" var System = Java.type("java.lang.System"); $EXEC(cmd, System.in, System.out, System.err);
The code above executes Maven and "streams" the output in real time into the console. With Java 9 Nashorn is even more useful for cross-platform automation of OS-level tasks.
Dockerfiles come with Nashorn script:
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