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Zeero is a Tru64 UNIX command/utility that zeros out disks prior to rewrite.^[1]

• It is a more efficient way of writing zeros to a disk (device file) than using /dev/zero with dd.^{[citation needed]}
• It is a way of data erasure -- removing sensitive data from a disk, or disk partition.
• shred would be more secure, but is not installed by default on Tru64 systems.

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