What's the nohup on Windows?

Question

I want to run a Java jar file like this:

java -jar spider.jar

How to run it on the background on Windows?

Like this on Linux:

nohup java -jar spider.jar > /var/tmp/spider.log 2>&1 &

Answer 1

On Windows it's not normal that a process terminates once its parent was killed (like Unix-likes do it normally). Therefore there is no direct necessity for something like nohup. If you want to avoid the console window associated with it, you can use javaw but redirection won't work, then.

Answer 2

You could use the Windows start command:

start /min java -jar spider.jar

This command is not really the same as nohup; but it might be suitable if you're happy with the Java process running in a separate minimised window. See http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/ntcmds.mspx

Answer 3

The only way to get the nohup behavior, where the process still runs after logging off (like for micro-services, analytic tools, server batch jobs etc.), is to run the .bat file with the start javaw -jar ... contents as either a service or a scheduled task.