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From: ark@alice.UUCP
Newsgroups: comp.unix.wizards
Subject: Re: rm with a block scrub
Message-ID: <6899@alice.UUCP>
Date: Mon, 18-May-87 21:32:29 EDT
Article-I.D.: alice.6899
Posted: Mon May 18 21:32:29 1987
Date-Received: Tue, 19-May-87 06:26:02 EDT
References: <7421@brl-adm.ARPA>
Organization: AT&T Bell Laboratories, Liberty Corner NJ
Lines: 6
Summary: It's easy enough to write one

In article <7421@brl-adm.ARPA>, evins@nrl-radar.arpa writes:
> 	Does anyone know of a version of rm that allows you to scrub blocks
> clean before making them available, for BSD VAXes and Suns.

Before you unlink the file, open it for output and write a block
of zeroes over every block of the file.  Then sync() and unlink it.