从crontab运行的Java程序的日志结果[权限被拒绝]

Question

I want to run the simple java program called from crontab. As I want to know whether the crontab is running properly, I want to print out the result as log file.

For now, I don't know the crontab is running my java program correctly or not.

Sample Java program:

public static void main(String[] args) {
    Calendar c = Calendar.getInstance();
    System.out.println("hello" + c.getTime());
}

Sample sh:

#!/bin/bash
JAVA_HOME=/usr/java/jre1.6.0_31/
export JAVA_HOME;


for file in /home/vas/servers/tomcat/myTest.jar
do
       CLASSPATH=$file:$CLASSPATH
done
export CLASSPATH

$JAVA_HOME/bin/java myTest

Crontab:

* * * * * /home/vas/servers/tomcat/myTest.sh > /home/vas/servers/tomcat/myTest.log 2>&1

PS: myTest.java, myTest.sh are all located under /home/vas/servers/tomcat/

Edited: include / in front of home.

=========================================================

Now I can see the log file , but it was saying that [ /bin/sh: /home/vas/servers/tomcat/myTest.sh: Permission denied ] .

Answer 1

Here is how to overwrite the log file:

* * * * * /home/vas/servers/tomcat/myTest.sh > home/vas/servers/tomcat/myTest.log

vs how to append to the log file:

* * * * * /home/vas/servers/tomcat/myTest.sh >> /home/vas/servers/tomcat/myTest.log

(edit, based on your comment)

Can you try something like this:

chmod 771 /home/vas/servers/tomcat/myTest.sh

And then do ls -al /home/vas/servers/tomcat/myTest.sh to be sure you have set permissions correctly.

Answer 2

Change > to >> in crontab and use absolute path to log file like this:

* * * * * /home/vas/servers/tomcat/myTest.sh >> /home/vas/servers/tomcat/myTest.log 2>&1

Also you better use exec when running Java from shell script:

exec $JAVA_HOME/bin/java myTest