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Top Forums UNIX for Advanced & Expert Users ISO file creation -- procedure Post 302348317 by thegeek on Friday 28th of August 2009 02:13:06 AM
Old 08-28-2009
ISO file creation -- procedure

Hi All,

Am creating ISO file for same directory two times and both has different md5sum, Why does it so ?!

Am pretty sure that, there is no change in that directory between the ISO creations, So what could be issue ? Or is there any misunderstanding in the process.

Code:
mkisofs -J -R -otest1.iso ./testdir
mkisofs -J -R -otest2.iso ./testdir

Expecting both the md5sum to be same !! but it is not ??

Code:
$ md5sum test?.iso
2a1001de29b75013d1bb5a8a787cf2ef  test1.iso
d01b9b1120ec6662d582dc3af6f94338  test2.iso

Side Note: I have related question posted already here, which dont had answer, so tried other ways and the above is one of the doubt in other way... https://www.unix.com/unix-advanced-ex...-iso-file.html
 

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Encode::Byte(3pm)					 Perl Programmers Reference Guide					 Encode::Byte(3pm)

NAME
Encode::Byte - Single Byte Encodings SYNOPSIS
use Encode qw/encode decode/; $greek = encode("iso-8859-7", $utf8); # loads Encode::Byte implicitly $utf8 = decode("iso-8859-7", $greek); # ditto ABSTRACT
This module implements various single byte encodings. For most cases it uses x80-xff (upper half) to map non-ASCII characters. Encodings supported are as follows. Canonical Alias Description -------------------------------------------------------------------- # ISO 8859 series (iso-8859-1 is in built-in) iso-8859-2 latin2 [ISO] iso-8859-3 latin3 [ISO] iso-8859-4 latin4 [ISO] iso-8859-5 [ISO] iso-8859-6 [ISO] iso-8859-7 [ISO] iso-8859-8 [ISO] iso-8859-9 latin5 [ISO] iso-8859-10 latin6 [ISO] iso-8859-11 (iso-8859-12 is nonexistent) iso-8859-13 latin7 [ISO] iso-8859-14 latin8 [ISO] iso-8859-15 latin9 [ISO] iso-8859-16 latin10 [ISO] # Cyrillic koi8-f koi8-r cp878 [RFC1489] koi8-u [RFC2319] # Vietnamese viscii # all cp* are also available as ibm-*, ms-*, and windows-* # also see L<http://msdn.microsoft.com/en-us/library/aa752010%28VS.85%29.aspx> cp424 cp437 cp737 cp775 cp850 cp852 cp855 cp856 cp857 cp860 cp861 cp862 cp863 cp864 cp865 cp866 cp869 cp874 cp1006 cp1250 WinLatin2 cp1251 WinCyrillic cp1252 WinLatin1 cp1253 WinGreek cp1254 WinTurkish cp1255 WinHebrew cp1256 WinArabic cp1257 WinBaltic cp1258 WinVietnamese # Macintosh # Also see L<http://developer.apple.com/technotes/tn/tn1150.html> MacArabic MacCentralEurRoman MacCroatian MacCyrillic MacFarsi MacGreek MacHebrew MacIcelandic MacRoman MacRomanian MacRumanian MacSami MacThai MacTurkish MacUkrainian # More vendor encodings AdobeStandardEncoding nextstep hp-roman8 DESCRIPTION
To find how to use this module in detail, see Encode. SEE ALSO
Encode perl v5.12.1 2010-04-26 Encode::Byte(3pm)
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