From 1a671e962786da343919b4ce6a33efc3077962c0 Mon Sep 17 00:00:00 2001
From: Urban Müller
Date: Wed, 25 Apr 2018 14:55:31 +0200
Subject: fix histogram, prevent hanging if no alertlogs

---
 it.class | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/it.class b/it.class
index 4c8c0f1..5820291 100644
--- a/it.class
+++ b/it.class
@@ -266,7 +266,7 @@ static function error($p = array())
 				$body .= $p['id']     ? "Filter: timewindow=" . $p['graceperiod'] . "-" . ($p['graceperiod'] + $p['timewindow']) . "  (previous err: " . it::date('', $errstamp) . ")\n\n" : "";
 				$body .= $origp['blockmail'] ? "Block-resend: " . $origp['blockmail'] . " seconds\n\n" : "";
 				$body .= !$trace ? "" : "Overview: ssh " . getenv('HOSTNAME') . " 'cat /tmp/alertdata/alertlog | grep \"$trace\"'\n\n";
-				$body .= ($trace and $t = it::exec('grep {0} `ls /tmp/alertdata/alertlog-*|tail -3` 2>/dev/null | grep ^2 | cut -d : -f 1-2 | sort | uniq -c | tail -10', $trace)) ? "Histogram: (today's last 10 affected minutes)\n$t\n" : "";
+				$body .= ($trace and $t = it::exec('grep -h {0} `ls /tmp/alertdata/alertlog-*|tail -3` /dev/null 2>/dev/null | grep ^2 | cut -d : -f 1-2 | sort | uniq -c | tail -10', $trace)) ? "Histogram: (today's last 10 affected minutes)\n$t\n" : "";
 				$body .= $_GET        ? "\$_GET: "    . var_export($_GET, true) . "\n\n" : "";
 				$body .= $_POST       ? "\$_POST: "   . var_export($_POST, true) . "\n\n" : "";
 				$body .= $_COOKIE     ? "\$_COOKIE: " . var_export($_COOKIE, true) . "\n\n" : "";
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