From ac2ee2f48c9a66e2525bcc384a7df5da86140dec Mon Sep 17 00:00:00 2001
From: gitea <mffan0922@163.com>
Date: Fri, 25 Aug 2023 22:04:40 +0800
Subject: [PATCH] [modify] add a condition to determine if the file is empty

---
 alert/docker_alarm.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/alert/docker_alarm.sh b/alert/docker_alarm.sh
index 08c8b5d..16e9f7b 100644
--- a/alert/docker_alarm.sh
+++ b/alert/docker_alarm.sh
@@ -10,6 +10,8 @@ while read line; do
     fi
 done < /opt/logs/docker_status.log
 
-alarm=`cat /tmp/docker_alarm.log`
-python3 /opt/scripts/alert/sendmail.py  "Docker Alarms" "$alarm"
+if [[ -s /tmp/docker_alarm.log ]]; then
+    alarm=`cat /tmp/docker_alarm.log`
+    python3 /opt/scripts/alert/sendmail.py  "Docker Alarms" "$alarm"
+fi