Print environment variables and properties

env.groovy

import java.lang.System
import java.util.TreeMap
import java.util.Comparator

def env = new TreeMap<String, String>(System.getenv()).toSorted(new Comparator<Map.Entry<String, String>>() {
    @Override
    int compare(Map.Entry<String, String> entry1, Map.Entry<String, String> entry2) {
        return entry1.key <=> entry2.key
    }
})
def props = System.getProperties()
def names = props.stringPropertyNames()
                 .toSorted(new Comparator<String>() {
                     @Override
                     int compare(String s, String t1) {
                         return s <=> t1
                     }
                 })
println("Environment Variables:")
env.entrySet()
   .each {entry -> println("\t${entry.key}: ${entry.value}")}

println("\n\nProperties:")
names.forEach({name ->
    def value = props.getProperty(name, '[not found]')
    println("\t${name}: ${value}")
})