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Top Forums Shell Programming and Scripting Extract sequences of bytes from binary for differents blocks Post 302843355 by Jotne on Tuesday 13th of August 2013 02:33:37 AM
Old 08-13-2013
Here is some that will work with hexdump, have no idea on how to do it on a binary file.
Code:
awk '{$1=$1} {for (i=1;i<=NF;i++) {if (($i" "$(i+1)" "$(i+5)" "$(i+6)" "$(i+7)" "$(i+8)" "$(i+13)" "$(i+14))=="ff 32 99 11 45 27 73 49") {f=i+1;print "field="f,"row="int(f/16+1),"column="(f/16-int(f/16))*16} }}' RS="" hexdump
field=33 row=3 column=1
field=344 row=22 column=8

Code:
awk '
	{$1=$1} 
	{for (i=1;i<=NF;i++) 
		{if (($i" "$(i+1)" "$(i+5)" "$(i+6)" "$(i+7)" "$(i+8)" "$(i+13)" "$(i+14))=="ff 32 99 11 45 27 73 49") 
			{f=i+1;print "field="f,"row="int(f/16+1),"column="(f/16-int(f/16))*16}
		}
	}' RS="" hexdump

 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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