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Full Discussion: data integrity check needed
Top Forums Shell Programming and Scripting data integrity check needed Post 302691041 by methyl on Thursday 23rd of August 2012 06:22:46 PM
Old 08-23-2012
@alister
I somehow knew that someone would know a way round this issue.

I'd be very interested in bulk file copy products for unix which can preserve the timestamps on both the files AND the directories.
Current best technique for unix uses disc mirroring software.

If anybody knows of a similar product for Windows Server 2003/2008 I'm very interested. Current technique also uses disc mirroring software.

My only interest is the best technique for blunt technology upgrades. i.e. Increasing the size of physical discs and swapping the mother board for a better one.
What we do at the moment is mirror the data discs to larger discs, smash the mirror, fit the new discs into a better cold-build system, and import the data discs. This technique has the advantage that the original computer is preserved intact but it can be a bit time-consuming.
 

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LEARN ABOUT REDHAT

cksum

cksum(n)							       cksum								  cksum(n)

NAME

       cksum - calculate a cksum(1) compatible checksum

SYNOPSIS

       package require Tcl 8.2

       package require cksum ?1.0?

       ::crc::cksum ?-format format? message

       ::crc::cksum ?-format format? -filename file

DESCRIPTION

       This  package  provides a Tcl-only implementation of the cksum(1) algorithm based upon information provided at in the GNU implementation of
       this program as part of the GNU Textutils 2.0 package.

COMMANDS

       ::crc::cksum ?-format format? message

       ::crc::cksum ?-format format? -filename file
	      The command takes string data or a file name and returns a checksum value calculated using the cksum(1)  algorithm.  The	result	is
	      formatted using the format(n) specifier provided or as an unsigned integer (%u) by default.

OPTIONS

       -filename name
	      Return a checksum for the file contents instead of for parameter data.

       -format string
	      Return the checksum using an alternative format template.

EXAMPLES

       % crc::cksum "Hello, World!"
       2609532967

       % crc::cksum -format 0x%X "Hello, World!"
       0x9B8A5027

       % crc::cksum -file cksum.tcl
       1828321145

SEE ALSO

       sum(n), crc32(n)

AUTHORS

       Pat Thoyts

KEYWORDS

       cksum, checksum, crc, crc32, cyclic redundancy check, data integrity, security

crc									1.0								  cksum(n)
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