wipe-free-space ( path -- )
Wipe

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wipe-file ( file-name -- )

Vocabulary
wipe

Inputs

path	a pathname string

Outputs
None

Word description
Create a temporary file at path that consumes all of free space on the drive, fill it with random data, then delete the file. This has the effect of wiping any recoverable data left on the drive after insecurely deleting the files.

Definition

USING: accessors io io.encodings.binary io.files io.files.info
io.files.unique io.streams.limited io.streams.random kernel
namespaces ;

IN: wipe

: wipe-free-space ( path -- )
    dup [
        file-system-info free-space>> "" "" unique-file binary [
            <random-stream> swap limit-stream
            output-stream get stream-copy
        ] with-file-writer
    ] with-temp-directory-at ;