Added option '-L' to candump to create the compact logfile output on stdout.

Added option '-L' to candump to create the compact logfile output on stdout.

Now you can forward CAN frames e.g. via netcat with candump and canplayer:

candump can0 can1 -L | canplayer vcan3=can0 vcan0=can1 -t

OK, maybe it would be reasonable to write a short program for this application.
But for some tests all this can be done with existing commandline tools.
In addition the filtering possibilities of candump can be used here.