print ARTHAS_LIB_DIR and JAVA_HOME. #2289

bin/as.sh

@@ -85,6 +85,8 @@ ARTHAS_HOME=
 # define arthas's lib
 if [ -z "${ARTHAS_LIB_DIR}" ]; then
     ARTHAS_LIB_DIR=${HOME}/.arthas/lib
+else
+    echo "[INFO] ARTHAS_LIB_DIR: ${ARTHAS_LIB_DIR}"
 fi
 
 # target process id to attach

boot/src/main/java/com/taobao/arthas/boot/Bootstrap.java

@@ -135,6 +135,7 @@ public class Bootstrap {
         String arthasLibDirEnv = System.getenv("ARTHAS_LIB_DIR");
         if (arthasLibDirEnv != null) {
             ARTHAS_LIB_DIR = new File(arthasLibDirEnv);
+            AnsiLog.info("ARTHAS_LIB_DIR: " + arthasLibDirEnv);
         } else {
             ARTHAS_LIB_DIR = new File(
                     System.getProperty("user.home") + File.separator + ".arthas" + File.separator + "lib");
@@ -311,6 +312,10 @@ public class Bootstrap {
     public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException,
                     ClassNotFoundException, NoSuchMethodException, SecurityException, IllegalAccessException,
                     IllegalArgumentException, InvocationTargetException {
+        String javaHome = System.getProperty("java.home");
+        if (javaHome != null) {
+            AnsiLog.info("JAVA_HOME: " + javaHome);
+        }
         Package bootstrapPackage = Bootstrap.class.getPackage();
         if (bootstrapPackage != null) {
             String arthasBootVersion = bootstrapPackage.getImplementationVersion();