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I want to save maven output to a file, but without loosing the output to console. Usage of tee is not an option because I run under Windows and also I do not want to add a binary tee.exe to the source tree.

sorin
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    There is really nothing maven-specific about this. I'd suggest asking on SuperUser.com if there is a way to redirect cmd output to both a file and the console. – Sean Patrick Floyd Jan 20 '11 at 11:39
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    This is *specific* to maven and it looks that maven does not support this yet, this being really ugly for a build system. – sorin Jan 24 '11 at 12:01
  • According to @Sean comment, here are possible workarounds [How to redirect output to a text file and the console (cmd) window at the same time?](http://superuser.com/a/111854/24948) or [Displaying Windows command prompt output and redirecting it to a file](http://stackoverflow.com/a/796492/251745) – chepseskaf Jul 24 '12 at 11:42

7 Answers7

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If you are using linux. you can use the bellow command. mvn install -X | tee log.txt

Varun
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    I meant it doesn't print to the console. The log.txt is fine – Sridhar Sarnobat Feb 15 '16 at 02:47
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    @Sridhar-Sarnobat I would expect by passing the command you've told maven (mvn) to save the logs to the file versus the default location (which on my system is 'System.out'). This is why you don't get the console output. Just look at the log files when saving to file. Side note - default logging location can be changed if needed via the ${MAVEN_HOME}/conf/logging/simplelogger.properties file. Here is a link if you need it: https://maven.apache.org/maven-logging.html – Zack Jannsen Mar 02 '16 at 11:40
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    @ZackJannsen not true. Other commands work fine. But thanks for the reply – Sridhar Sarnobat Mar 23 '16 at 06:23
  • What is `-X` for? – anatoly techtonik May 14 '17 at 15:29
  • -X is for debug mode log – Varun May 16 '17 at 11:06
  • tee command is available for Windows too. It is inside Cygwin package. Maybe manual selection of tee is needed. – JRr Jan 21 '22 at 16:02
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Maven 3 command output can be redirected now. See the below command on windows:

mvn -X install  > test.log

This will redirect the command output to test.log file ,located in the current directory.

Manmohan_singh
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Vishnu
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3

As of today, maven2 does not supports this.

sorin
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Use Powercmd. It works as like normal command prompt plus some additional features like automatically log everything on screen, multiple windows, shortcuts.

Shailesh Pratapwar
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use a tail command tail -f log_file_name in another console.

some_random_guy
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2

Since you said you're on windows. In powershell there is the Tee-Object. I run maven as such: (note that in powershell you'll need to enclose the whole -Dexec.args in quotes).

mvn exec:java "-Dexec.mainClass=com.proj.main" "-Dexec.args=arg0 arg1" | Tee-Object -FilePath output.log
Dave Baghdanov
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Use :

> file-name

at the end of your mvn command to send output to a file then use something like wintail to tail the file.

wr1472
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