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How do I specify the location of log4j.log?

807589Sep 18 2008 — edited Sep 18 2008
I want to create the log4j.log file in "C:\TEMP\" for Windows and "/tmp/" for linux. Is there anyway that I can do to that?
Here is what I currently have for my log4j.properties: 
# SET ROOT CATEGORY PRIORITY TO DEBUG AND ONLY APPENDER TO A1, C1, R
log4j.rootCategory=DEBUG, C1, R

log4j.appender.C1=org.apache.log4j.ConsoleAppender
log4j.appender.C1.layout=org.apache.log4j.PatternLayout
log4j.appender.C1.layout.ConversionPattern=%d [%t] %-5p %c %x - %m%n

log4j.appender.R=org.apache.log4j.RollingFileAppender
#Create the file in Windows
#log4j.appender.R.File=C://TEMP//log4j.log
#Create the file in Linux
log4j.appender.R.File=/tmp/log4j.log
log4j.appender.R.MaxFileSize=15000KB
# KEEP FIVE BACKUP FILES
log4j.appender.R.MaxBackupIndex=5
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d [%t] %-5p %c %x - %m%n
#log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
Thank You,
Chris

Comments

807589
Here is another configuration file that uses multiple appenders.
log4j.rootLogger=debug, stdout, R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n

log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log

log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1

log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
In addition, as the root logger has been allocated a second appender, output will also be directed to the example.log file. This file will be rolled over when it reaches 100KB. When roll-over occurs, the old version of example.log is automatically moved to example.log.1.
807589
Where does the log go in Linux if I do this:
log4j.appender.R.File=log4j.log
807589
revchrism wrote:
Where does the log go in Linux if I do this:
log4j.appender.R.File=log4j.log
to the mentioned location i.e. log4j.log
807589
Where is the file going to be located? /, /home, /tmp, the users home directory
625957
Where is the file going to be located? /, /home, /tmp, the users home directory
Why not try it? I vote for none of the above.

You can use java system properties in your log4 properties file: [http://forums.sun.com/thread.jspa?messageID=4445852]
807589
I have some users on Windows and others on Linux, currently the Windows users have no problem with the log4j.log (it's being created in C:\TEMP\). However the Linux users are not able to create the log4j.log because there is no file called C:\TEMP\ on their systems. What I need is a way to have the program see which OS the user has and change the output folder for the log4j.log. Is there anyway of doing that? Can I setup multiple file locations?
625957
From what I understand you have these options:

1) Create 2 builds of your app for different operating systems with different log4j configs
2) Create the logs in a directory relative to your application.
3) Use a java system property in log4j properties file and log to java.io.tempdir for example.

You seem really keen on logging to c:\temp or /tmp, why?
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Locked on Oct 16 2008
Added on Sep 18 2008
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