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17 lines
981 B
Plaintext
17 lines
981 B
Plaintext
Srm is a secure replacement for rm(1). Unlike the standard rm, it overwrites
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the data in the target files before unlinkg them. This prevents command-line
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recovery of the data by examining the raw block device. It may also help
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frustrate physical examination of the disk, although it's unlikely that
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completely protects against this type of recovery.
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Srm uses algorithms found in _Secure Deletion of Data from Magnetic and
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Solid-State Memory_ by Peter Gutmann and THC Secure Delete (the overwrite,
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truncate, rename, unlink sequence).
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All users, but especially Linux users, should be aware that srm will only
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work on file systems that overwrite blocks in place. In particular, it will
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_NOT_ work on resiserfs or the vast majority of journaled file systems. It
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should work on ext2, FAT-based file systems, and the BSD native file system.
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Ext3 users should be especially careful as it can be set to journal data as
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well, which is an obvious route to reconstructing information.
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