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Full Discussion: Permanent file deletion - sensitive data
Top Forums UNIX for Advanced & Expert Users Permanent file deletion - sensitive data Post 302122424 by jim mcnamara on Wednesday 20th of June 2007 12:10:25 PM
Old 06-20-2007
There are command line utilties like GNU shred which can be installed and are free. It works well.

A problem arises when the file is on a RAID, or when the filesystem does not perform update in place -- a journaled or log structured fs for example. Then you have a wholly different problem. Then - none of these kind of programs work well.
 

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LEARN ABOUT DEBIAN

ktoblzcheck

KTOBLZCHECK(1)						      General Commands Manual						    KTOBLZCHECK(1)

NAME

       ktoblzcheck - Check Account and BLZ (bank routing code)

SYNOPSIS

       ktoblzcheck [--returncode] [--file=<datafile>] <bank-id> <account-id>

DESCRIPTION

       This manual page documents briefly the ktoblzcheck application.

       ktoblzcheck  is	a program that will check a given account and blz for the bank being valid and the account being valid using some checksum
       calculations, if supported for that particular bank. The output is the clear-text name of the bank specified by <bank-id>, and whether  the
       given <account-id> is a valid account number at this bank.

OPTIONS

       <bank-id>
	      This is the Bankleitzahl (bank routing id), actually it is the account-id of that particular bank at the Deutsche Bundesbank.

       <account-id>
	      This  is the account number you wish to verify. If the checksum method of the bank specified by the <bank-id> is supported, you will
	      get the account-id verified, i.e. if it is a valid account-id at that particular bank.

       --returncode
	      If given, the result is returned via the returncode and no output on the	terminal.  The	following  returncodes	are  possible:	0:
	      account and bank are ok 1: unknown, e.g. checksum not implemented or such 2: account and/or bank not ok 3: bank not found

       --file=<datafile>
	      Specifies the file with the bankdata. This file can be obtained via the internet from the Deutsche Bundesbank on address
	      http://www.bundesbank.de/zahlungsverkehr/zahlungsverkehr_bankleitzahlen_download.php
	      Beware! This page is in German only.

BUGS

       No  bugs  are  known  at  this  time.  Only certain checksum algorythms are supported as of now, so please don't complain if you always get
       "unknown" as return value.

AUTHOR

       This manual page was written by Jens Gecius <jens@gecius.de> for the Debian GNU/Linux system. Authors  of  ktoblzcheck  are  Fabian  Kaiser
       <fabian@openhbci.de> and Christian Stimming <stimming@tuhh.de>.

								  August 3, 2003						    KTOBLZCHECK(1)
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