Trying to output my LogCat to a file

Question

I\'ve been told it\'s a command line option. But Eclipse\'s Run!Run Configurations...!Target!Additional Emulator Command Line Options field is already occupied with

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Answer 1

Another useful addition to the above answers is filtering. The application I am working on generates a massive amount of logging, so it is useful to log with filters.

adb -s MyDevice logcat | find /V ": T#" > d:\temp\logcat.txt

or for OSX/Linux

adb -s MyDevice logcat | grep -v ": T#" > ~/logcat.txt

This will write all logcat activity apart from any line that contains ": T#"

find or grep can also be used to filter based on positive results. I then use the likes of BareTail display the growing log file.

Answer 2

Alternatively, if you only want to dump whatever's already in the logcat buffers and exit immediately (useful for scripts), you can specify the -d option:

$ adb logcat -d -s MessageBox  > dump_file.txt

Make sure that '-d' is after 'logcat'.

Answer 3

There should be an adb.exe file in C:\android-sdk-windows\tools. You can invoke this manually from a DOS command prompt:

cd C:\android-sdk-windows\tools
adb logcat -s MessageBox > "C:\Users\me\Documents\LogCatOutput.txt"

There's no need to bother with Eclipse in this case.