udpate Makefile

Makefile

@@ -125,7 +125,7 @@ copy_config_srv:
 # Save the previous nexus-server binary (in case a revert were needed)
 save_old_srv_binaries:
 	@echo "Saving old server binaries"
-	@mv $(SERVER_BASEDIR)/bin/nexus-server $(SERVER_BASEDIR)/bin/nexus-server.old
+	@ln $(SERVER_BASEDIR)/bin/nexus-server $(SERVER_BASEDIR)/bin/nexus-server.old
 
 copy_binaries_srv:
 	@echo "Copying server binaries"
@@ -136,7 +136,6 @@ copy_binaries_srv:
 	@echo "OK"
 
 update_srv: check_prefix_var prepare_update_srv save_old_srv_binaries copy_binaries_srv
-#	@chown -R $(USER):$(USER) $(SERVER_BASEDIR)/bin
 	@echo "Successfully updated nexus-server in $(SERVER_BASEDIR)"
 
 prepare_update_srv: