Search code examples
androidfiletextgreplogcat

grep the adb logcat & write the output to a text file

I want to grep the adb logcat and write the output to a text file. If I just do:

./adb logcat > std.txt

it writes the entire log to the text file. If I do:

./adb logcat | grep ABC

it prints all lines containing ABC to my terminal. But now I wish to search for ABC & write only these lines to a text file.

This:

./adb logcat | grep ABC > std.txt

doesn't work.

What's the correct command?

Solution

  • I think there is a problem with grep buffering. You can try something like this:

    ./adb logcat | grep --line-buffered ABC > std.txt

    It should be the same problem for chained grep.

    EDIT: A similar question can be found here: Why no output is shown when using grep twice?.