Another binary manipulation thread. Post: 302854921

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Top Forums UNIX for Advanced & Expert Users Another binary manipulation thread. Post 302854921 by DGPickett on Wednesday 18th of September 2013 04:03:10 PM

09-18-2013

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All the 256 holes are always taken, so if your milieu does not have a limited character set, then you are right, the only escape is into longer strings for short characters, but then only context tells you that is the sort of file you have. That's why JAVA and xml use UTF-8 and label the content type. It started as a 'code page' discussion, a.k.a "what drum is on the printer".

There are apps for UNIX around that let you deal with image files like jpg and gif in text files of text numbers, like a decimal dump of a bmp file. I suppose if you run binary through the right dump you can then process it in shell back to a binary file.

Last edited by DGPickett; 09-18-2013 at 05:37 PM..

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lwp-dump5.18

LWP-DUMP(1)						User Contributed Perl Documentation					       LWP-DUMP(1)

NAME

       lwp-dump - See what headers and content is returned for a URL

SYNOPSIS

       lwp-dump [ options ] URL

DESCRIPTION

       The lwp-dump program will get the resource indentified by the URL and then dump the response object to STDOUT.  This will display the
       headers returned and the initial part of the content, escaped so that it's safe to display even binary content.	The escapes syntax used is
       the same as for Perl's double quoted strings.  If there is no content the string "(no content)" is shown in its place.

       The following options are recognized:

       --agent str
	   Override the user agent string passed to the server.

       --keep-client-headers
	   LWP internally generate various "Client-*" headers that are stripped by lwp-dump in order to show the headers exactly as the server
	   provided them.  This option will suppress this.

       --max-length n
	   How much of the content to show.  The default is 512.  Set this to 0 for unlimited.

	   If the content is longer then the string is chopped at the limit and the string "...
(### more bytes not shown)" appended.

       --method str
	   Use the given method for the request instead of the default "GET".

       --parse-head
	   By default lwp-dump will not try to initialize headers by looking at the head section of HTML documents.  This option enables this.
	   This corresponds to "parse_head" in LWP::UserAgent.

       --request
	   Also dump the request sent.

SEE ALSO

       lwp-request, LWP, "dump" in HTTP::Message

perl v5.18.2							    2012-01-13							       LWP-DUMP(1)