How do you wipe slack space from all files in Linux? There appears to be two issues here: one is that you can't wipe recursively into directories, and two, you can't wipe hidden files unless you explicitly state the filename or use the .* wildcard. I am looking for an easy solution to wipe ALL files including those found recursively in subdirectories.
I have tried bcwipe -Smd / , but it comes back with the message "/ is a directory - Skipping".
I have also tried bcwipe -Smd * , which appears to wipe slack on all unhidden files in the current directory only.