--- a/CHANGELOG	Sat Nov 10 10:16:38 2018 +0100
+++ b/CHANGELOG	Sat Nov 10 10:16:38 2018 +0100
@@ -48,6 +48,7 @@
         - new ad-hoc/list and ad-hoc/run commands
         - new forums commands
         - new avatar commands
+        - new ping command
         - better handling of arguments for pubsub related commands
         - improved outputs
         - new template output, jp can now act as a static site generator

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sat_frontends/jp/cmd_ping.py	Sat Nov 10 10:16:38 2018 +0100
@@ -0,0 +1,47 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+# jp: a SAT command line tool
+# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import base
+from sat.core.i18n import _
+
+__commands__ = ["Ping"]
+
+
+class Ping(base.CommandBase):
+
+    def __init__(self, host):
+        super(Ping, self).__init__(host, 'ping', help=_('ping XMPP entity'))
+        self.need_loop=True
+
+    def add_parser_options(self):
+        self.parser.add_argument(
+            "jid", type=base.unicode_decoder, help=_(u"jid to ping")
+        )
+        self.parser.add_argument(
+            "-d", "--delay-only", action="store_true", help=_(u"output delay only (in s)")
+        )
+
+    def _pingCb(self, pong_time):
+        fmt = u"{time}" if self.args.delay_only else  u"PONG ({time} s)"
+        self.disp(fmt.format(time=pong_time))
+        self.host.quit()
+
+    def start(self):
+        self.host.bridge.ping(self.args.jid, self.profile,
+            callback=self._pingCb, errback=self.errback)