How to securely delete files on Fedora 27 (ext4)?
I have some confidential files that I did encrypt, but there are still the original, unencrypted files on my HDD. What I want to do is overwriting these 25+ times with random data junk, making them absolutely and totally unrecoverable. The shred man-page says shred is not guaranteed to work on journal file systems, like ext. Is this statement correct? So I am looking for alternatives to shred for Fedora 27 (64-bit or architecture-independent).