Use rcctl in initdb instructions if using the path that the rc.d
script handles.

Index: src/bin/initdb/initdb.c
--- src/bin/initdb/initdb.c.orig
+++ src/bin/initdb/initdb.c
@@ -3152,6 +3152,16 @@ main(int argc, char *argv[])
 
 	if (!noinstructions)
 	{
+		if (strcmp(pgdata_native, "/var/postgresql/data") == 0)
+		{
+			printf("\nSuccess. You can now start the database server using:\n\n"
+			   "    rcctl start postgresql\n\n"
+			   "To start the PostgreSQL server automatically at boot:\n\n"
+			   "    rcctl enable postgresql\n\n"
+			   );
+		}
+		else
+		{
 		/*
 		 * Build up a shell command to tell the user how to start the server
 		 */
@@ -3183,6 +3193,7 @@ main(int argc, char *argv[])
 			   start_db_cmd->data);
 
 		destroyPQExpBuffer(start_db_cmd);
+		}
 	}