From 41e3f2e5ede8951e4e2a58085718c790aef6477c Mon Sep 17 00:00:00 2001
From: sebres <serg.brester@sebres.de>
Date: Thu, 14 Jul 2016 11:35:32 +0200
Subject: [PATCH] explicit flush stdout/stderr before exit, because of possible
 buffered output in python (echo or grep `fail2ban-client --version` can
 sometimes returns nothing)

---
 fail2ban/client/fail2bancmdline.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fail2ban/client/fail2bancmdline.py b/fail2ban/client/fail2bancmdline.py
index 4cb1927e..a14a1cf4 100644
--- a/fail2ban/client/fail2bancmdline.py
+++ b/fail2ban/client/fail2bancmdline.py
@@ -270,6 +270,10 @@ class Fail2banCmdLine():
 	@staticmethod
 	def exit(code=0):
 		logSys.debug("Exit with code %s", code)
+		# because of possible buffered output in python, we should flush it before exit:
+		sys.stdout.flush()
+		sys.stderr.flush()
+		# exit
 		Fail2banCmdLine._exit(code)