Ok, so this thread gets a blast to the past.

Running Ubuntu 16.04, Bitcoin Core, encrypted wallet - I know the passphrase, I must have just fat fingered it twice in exactly the same way, which I have been unable to duplicate.

Followed Revalin's instructions from pages 2-4, however I cannot get the brute.rb to copy to the usr/bin folder, which is where I THINK it goes. That's where the bitcoin-qt app is and Revalin indicated the brute.rb file needed to be where the Bitcoin app was located.

No matter what variation of "sudo su" [password] "sudo cp ~/home/username/Bitcoin ~/usr/bin I try, I get, "cannot stat 'blah/blah/blah (path): No such file or directory

I cannot drag the file the the usr/bin folder because of the permission issue (goddam linux needs an override for that).

Help would be truly appreciated.