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Linux.com: CLI Magic: Securely Deleting Files with shred

Mar 07, 2006, 13:00 (0 Talkback[s])

"I used to think a simple format of a hard drive was enough to make data recovery impossible, but I was wrong. To ensure that details of your secret love affair, bank account passwords, and daily porn site visits cannot be recovered, use shred.

"Deleting a file with the rm command merely adds a file's data blocks back to the system's free list. A file can be restored easily if its 'freed' blocks have not been used again. shred repeatedly overwrites a file's space on the hard disk with random data, so even if a data recovery tool finds your file, it will be unreadable. By default, shred does not delete a file, but you can use the -u or --remove switch to delete it..."

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