Add props program

build.sbt

@@ -17,11 +17,21 @@ lazy val native = project
     Publish.settings
   )
 
+lazy val props = project
+  .enablePlugins(PackPlugin)
+  .settings(
+    crossPaths := false,
+    autoScalaLibrary := false,
+    name := "props",
+    Publish.settings
+  )
+
 lazy val echo = project
   .in(file("."))
   .aggregate(
     jvm,
-    native
+    native,
+    props
   )
   .settings(
     publishArtifact := false,

props/src/main/java/coursier/props/Props.java

@@ -0,0 +1,19 @@
+package coursier.props;
+
+public class Props {
+
+    public static void main(String[] args) {
+
+        for (String arg: args) {
+            String value = System.getProperty(arg);
+
+            if (value == null) {
+                System.err.println("Property " + arg + " is not defined.");
+                System.exit(-1);
+            }
+
+            System.out.println(value);
+        }
+    }
+
+}

test.sh

@@ -5,11 +5,19 @@ if [ ! -e jvm/target/pack/bin/echo ]; then
   sbt jvm/pack
 fi
 
+if [ ! -e props/target/pack/bin/props ]; then
+  sbt props/pack
+fi
+
 
 runEcho() {
   jvm/target/pack/bin/echo "$@"
 }
 
+runProps() {
+  props/target/pack/bin/props "$@"
+}
+
 RED='\033[0;31m'
 GREEN='\033[0;32m'
 RESET='\033[0m'
@@ -35,5 +43,18 @@ echoTest1() {
   fi
 }
 
+propsTest1() {
+  local EXPECTED="$(pwd)"
+  local OUTPUT="$(runProps user.dir)"
+  if [ "$OUTPUT" = "$EXPECTED" ]; then
+    passed propsTest1
+  else
+    echo "Expected $EXPECTED, got $OUTPUT"
+    failed propsTest1
+  fi
+}
+
 
 echoTest1
+
+propsTest1