bash 将 java jar stdout 和 stderr 记录到 linux 中的文件
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Logging java jar stdout & stderr to a file in linux
提问by lkallas
I found a script that I can use for my jar file. My question is how can I modify it to log stdout and stderr to file.
我找到了一个可以用于我的 jar 文件的脚本。我的问题是如何修改它以将 stdout 和 stderr 记录到文件中。
As I understand that this line should be modified:
据我了解，应修改此行：
nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null &
What does "/tmp"indicate? /dev/null means it is not directing anuthing to anywhere?
什么是“/ tmp目录”说明什么？/dev/null 意味着它没有将 anuthing 定向到任何地方？
Here is the script I'm using:
这是我正在使用的脚本：
#!/bin/sh
SERVICE_NAME=MyService
PATH_TO_JAR=/usr/local/MyProject/MyJar.jar
PID_PATH_NAME=/tmp/MyService-pid
case in
start)
echo "Starting $SERVICE_NAME ..."
if [ ! -f $PID_PATH_NAME ]; then
nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null &
echo $! > $PID_PATH_NAME
echo "$SERVICE_NAME started ..."
else
echo "$SERVICE_NAME is already running ..."
fi
;;
stop)
if [ -f $PID_PATH_NAME ]; then
PID=$(cat $PID_PATH_NAME);
echo "$SERVICE_NAME stoping ..."
kill $PID;
echo "$SERVICE_NAME stopped ..."
rm $PID_PATH_NAME
else
echo "$SERVICE_NAME is not running ..."
fi
;;
restart)
if [ -f $PID_PATH_NAME ]; then
PID=$(cat $PID_PATH_NAME);
echo "$SERVICE_NAME stopping ...";
kill $PID;
echo "$SERVICE_NAME stopped ...";
rm $PID_PATH_NAME
echo "$SERVICE_NAME starting ..."
nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null &
echo $! > $PID_PATH_NAME
echo "$SERVICE_NAME started ..."
else
echo "$SERVICE_NAME is not running ..."
fi
;;
esac
I would like to log everything to /var/log/myservice.logfile. Any help is appreciated!
我想将所有内容都记录到/var/log/myservice.log文件中。任何帮助表示赞赏！
采纳答案by lkallas
I found this solution:
我找到了这个解决方案：
nohup java -jar $PATH_TO_JAR > /var/log/myservice.log 2>&1 &
When I deleted the log file while the servce was running it didn't create a new one altough it was streaming to stdout.
当我在 servce 运行时删除日志文件时，它并没有创建一个新文件，尽管它正在流式传输到 stdout。
