Hi, David, Thanks for your information, it helps a lot. But it seems that sysout-over-slf4j has not supported OSGi yet. And I can't redirect the system.out/err from various bundle which has its own classloader in OSGi environment. If sysout-over-slf4j works like log4j-over-slf4j, that will be very cool. Do you have any other advice ? Thanks. Another question is when I redirect felix-main system.out into a file, it casts an exception as follows: 2011-07-21 14:21:48,142 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] Exception in thread "Felix Shell TUI" java.lang.OutOfMemoryError: Java heap space 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at java.util.Arrays.copyOf(Arrays.java:2882) 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100) 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390) 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at java.lang.StringBuilder.append(StringBuilder.java:119) 2011-07-21 14:21:48,143 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at uk.org.lidalia.sysoutslf4j.context.LoggerAppenderImpl.append(LoggerAppenderImpl.java:52) 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at uk.org.lidalia.sysoutslf4j.system.SLF4JPrintStreamDelegate.delegatePrint(SLF4JPrintStreamDelegate.java:68) 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at uk.org.lidalia.sysoutslf4j.system.SLF4JPrintStreamImpl.print(SLF4JPrintStreamImpl.java:251) 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at org.apache.felix.shell.tui.Activator$ShellTuiRunnable.run(Activator.java:133) 2011-07-21 14:21:48,144 ERROR [Felix Shell TUI] java.lang.ThreadGroup [LogLevel.java:88] at java.lang.Thread.run(Thread.java:619) And in the log file there are lots of '>' which appears on the felix terminal console. It seems that '>' is printed by felix and then redirected to sysout-over-slf4j. However it has too many '>' and SLF4JPrintStreamImpl goes down. Am I right? Is this a bug of sysout-over-slf4j? Here is a list I use: felix 3.2.0, slf4j-api-1.6.1, logback-* -0.9.28 and sysout-over-slf4j-1.0.2. Any advice? From: logback-user-bounces@qos.ch [mailto:logback-user-bounces@qos.ch] 代表 David Roussel at: 2011年7月20日 2:57 Receiver: logback users list Subject: Re: [logback-user] how to redirect system.out/err to a file? Dominic, That work mentioned by rob was done, and he sent a notification to this this a while back. You can find all the instructions here: http://projects.lidalia.org.uk/sysout-over-slf4j/ There are some restrictions, so do read the docs. David On 19 Jul 2011, at 07:42, Zhangguangchao wrote: Hi, Is there a configuration to redirect STDOUT to a file? By the way, I found the same question asked in http://www.qos.ch/pipermail/logback-user/2009-June/001141.html and I wanna know whether it is fixed and how. And I didn't found the new feature about ConsoleAppender configuration changed in Logback News. Thanks a lot. Dominic Zhang _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://qos.ch/mailman/listinfo/logback-user