I'm running two minecraft servers on my machine. I want to know what the pid is of a single mc server that is running and put it to file so that I can kill it later. So for this example I only want to know what the PID is of World2 nothing else and save it to file.

When I perform a command 

```
ps h -o pid,cmd -u minecraft 

```

I get the following results

```
31416 /usr/lib/jvm/java-8-oracle/jre/bin/java -Xmx2G -Xms1G -jar /data/mc-server/World1/minecraft_server.jar nogui
31706 /usr/lib/jvm/java-8-oracle/jre/bin/java -Xmx6G -Xms4G -jar /data/mc-server/World2/craftbukkit.jar nogui

```

I then pipe to grep using this command

```
grep World2

```

This is where I get into difficulties, I then pipe to to get a single result back. I tried the following but just can't get it.

```
awk '{print $1 > world2.pid}'

```

So my full command is:

```
ps h -o pid,cmd -u minecraft | grep World2 | awk '{print $1 > world2.pid}'

```

I get the following error:

```
awk: cmd. line:1: {print $1 > world2.pid}
awk: cmd. line:1:                 ^ syntax error

```