I want to shred a file, making it unrecoverable. I normally use the command 'bleachbit -s file'. When I was searching about it, I found out that the journaling in ext4 makes a copy of the file somewhere else, that isn't deleted even after the file was shredded. In another forum, someone said the file resulted from the journaling deletes itself after some time.
Is it true? Can i trust only Bleachbit to wipe my files, knowing they will be unrecoverable after some time, or the journaling feature makes it useless, because, even after this, they will still be recoverable?
Sorry if it is a stupid question. I'm somewhat new to Linux and still don't know much. And sorry for my English, I'm more of a reader than a writer.