I performed a HDD scan to see what consumes my space on my dual boot Ubuntu 14.04 and found out a directory /home/user/.jubula/logs that gets ~20 gb of my space.
So, what is Jubula and how can it consume 20gb for logging when I have never used it?
It's probably your client's log which is large. The application you're testing must have a lot of log output, which is also saved into this folder. (files like rc_*.log)
You could write a batch script to remove it regularly; like at every launch. There's not much need to keep this log when you launch an AUT from the beginning again.
You could also delete the AUT agent's logs if you have a working AUT configuration. (client.log) Anyways, if you want to track why a test failed, the test results are kept in the database.