Once your data has been erased, it can no longer be read through traditional means.
Free and works as advertised.
Documentation, please. (Sounds like massive overkill!)
Sounds like it's doing the same thing that we can already do in Terminal:
srm -frv /path/to/a/file/or/folder/
Be very careful with that command, making sure the path is 100% correct first (via
ls or something), as it does totally nuke data.
From
man srm:
The -s option overrides the -m option, if both are present. If neither is specified, the 35-pass Gutmann algorithm is used.