I found this answer about how to do it with Groovy:
Detecting the platform (Window or Linux) by Groovy/Grails:
if (System.properties['os.name'].toLowerCase().contains('windows')) {
println "it's Windows"
} else {
println "it's not Windows"
}
Is there a better way?
Actually, I looked at the Gradle project, and this looks a little cleaner as it uses Ant’s existing structure:
I found this in the following Gradle branch, and it seems to work nicely. gradle/gradle-core/branches/RB-0.3/build.gradle