Re: [Wrapper-user] realpath on unix?

[Leif M. <le...@ta...>]

Prashant,

>1.On unix systems what is the difference between wrapper begin started in
>"console" more and "start" more..
>Do both install the application as daemon? what happens if the wrapper is
>started in console mode in one xterm window, and then I close the same
>window (/session)?
>Will the application continue to run as daemon, meaning can i log out and
>expect it to be running?
>  
>
The "console" command will run the Wrapper in the current console.  You 
will not be able
to type "exit" in the console unless you first stop the Wrapper.   If 
you kill the console via
any other means then the Wrapper and its JVM will also be stopped 
because they are
child processes of the console.   The benefit of console mode is that 
you are able to see
the Wrapper's output in the console as well as have the ability to press 
CTRL-C and
CTRL-\ within that console.

The "start" command is used to launch the Wrapper as a detached 
process.  When running
as a detached process, you will immediately regain control of the 
console used to launch
the Wrapper.  You will also be able to now close the console and the 
Wrapper will stay
running.   The drawbacks are that the only way to see the output is to 
"tail -f wrapper.log"
and you will need to use the "stop" command to stop the wrapper and the 
"dump"
command to request a thread dump.

No matter how the Wrapper is launched, the "stop" and "dump" commands 
can always
be used from another console.

You mentioned installing the Wrapper as a daemon.   The "start" command 
will launch
the Wrapper as a daemon process, but it will not be restarted when the 
system is
rebooted.   This install process is a little different for every 
platform and depends on
what the application being run by the Wrapper actually does.
I have described how to do this on Solaris and Debian Linux systems on 
the following
page.   If you are using another platform, take a look at these for 
hints.  I would also
appreciate instructions for your platform so I can add it to the docs.
http://wrapper.tanukisoftware.org/doc/english/launch-nix.html

>2. What does "dump" mode do?
>  
>
Try it :-)   It tells the Wrapper to in turn prompt the JVM to perform a 
thread dump.   If
you launched the Wrapper using the "console" command, you can also do 
this by pressing
CTRL-\ in the console where the Wrapper is running.

Cheers,
Leif