when I ran the newest release Jenkins in windows command line, it starts out ok. But after I left it running overnight, when I check back the next morning it stopped. There is on error message on the command line output. The command line output is attached. I tried to output the log to a file, also attached. There isn't anything much there.

command line:

C:\jenkinTest>java -jar jenkins.war --logfile=C:\jenkinsTest\log\test.log
Exception in thread "main" java.io.FileNotFoundException: C:\jenkinsTest\log\tes
t.log (The system cannot find the path specified)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:212)
at LogFileOutputStream.<init>(LogFileOutputStream.java:57)
at Main._main(Main.java:148)
at Main.main(Main.java:98)

C:\jenkinTest>java -jar jenkins.war --logfile=C:\jenkinTest\log\test.log
May 21, 2013 11:36:11 AM winstone.Logger logInternal
INFO: Beginning extraction from war file
May 21, 2013 11:36:13 AM winstone.Logger logInternal
INFO: HTTP Listener started: port=8080
May 21, 2013 11:36:13 AM winstone.Logger logInternal
INFO: Winstone Servlet Engine v0.9.10 running: controlPort=disabled
May 21, 2013 11:36:13 AM jenkins.InitReactorRunner$1 onAttained
INFO: Started initialization
May 21, 2013 11:36:14 AM jenkins.InitReactorRunner$1 onAttained
INFO: Listed all plugins
May 21, 2013 11:36:14 AM jenkins.InitReactorRunner$1 onAttained
INFO: Prepared all plugins
May 21, 2013 11:36:14 AM jenkins.InitReactorRunner$1 onAttained
INFO: Started all plugins
May 21, 2013 11:36:14 AM jenkins.InitReactorRunner$1 onAttained
INFO: Augmented all extensions
May 21, 2013 11:36:23 AM jenkins.InitReactorRunner$1 onAttained
INFO: Loaded all jobs
May 21, 2013 11:36:24 AM org.jenkinsci.main.modules.sshd.SSHD start
INFO: Started SSHD at port 65227
May 21, 2013 11:36:24 AM jenkins.InitReactorRunner$1 onAttained
INFO: Completed initialization
May 21, 2013 11:36:25 AM hudson.TcpSlaveAgentListener <init>
INFO: JNLP slave agent listener started on TCP port 65228
May 21, 2013 11:36:25 AM hudson.WebAppMain$2 run
INFO: Jenkins is fully up and running
May 21, 2013 5:26:04 PM hudson.model.AsyncPeriodicWork$1 run
INFO: Started Fingerprint cleanup
May 21, 2013 5:26:04 PM hudson.model.FingerprintCleanupThread execute
INFO: Cleaned up 0 records
May 21, 2013 5:26:04 PM hudson.model.AsyncPeriodicWork$1 run
INFO: Finished Fingerprint cleanup. 3 ms
May 21, 2013 8:07:31 PM hudson.model.AsyncPeriodicWork$1 run
INFO: Started Workspace clean-up
May 21, 2013 8:07:31 PM hudson.model.AsyncPeriodicWork$1 run
INFO: Finished Workspace clean-up. 7 ms

C:\jenkinTest>

Log File output using the --logfile swithc:
Running from: C:\jenkinTest\jenkins.war
webroot: $user.home/.jenkins
Jenkins home directory: C:\Users\m2c2\.jenkins found at: $user.home/.jenkins
(Note) Those 3 lines are all what is inside the log file.

Please let me know if there is better way to get more log information out of jenkins. I am aware you can do it through webgui, but that doesn't save log file on the disk. When the jenkins stops, there is no way for me to get the log back.