Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Extract sequences of bytes from binary for differents blocks
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

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Remove first N bytes and last N bytes from a binary file on AIX.

Hi all, Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this? Your help is greatly appreciated!! Best Regards, Naveen. (1 Reply)
Discussion started by: naveendronavall
1 Replies

2. UNIX for Advanced & Expert Users

Deal with binary sequences

Hello, I have come across the necessity for me to deal with binary sequences and I had a few questions. 1- Does any UNIX scripting language provide any tool or command for converting text data to binary sequences? Example of binary sequence: "0x97 0x93 0x85 0x40 0xd5 0xd6 0xd7" 2- If I want... (2 Replies)
Discussion started by: Indalecio
2 Replies

3. Shell Programming and Scripting

Extract sequence blocks

Hi, I have an one-line file consisting of a sequence of 660 letters. I would like to extract 9-letter blocks iteratively: ASDFGHJKLQWERTYUIOPZXCVBNM first block: ASDFGHJKL 1nd block: SDFGHJKLQ What I have so far only gives me the first block, can anyone please explain why? cat... (7 Replies)
Discussion started by: solli
7 Replies

4. Shell Programming and Scripting

extract blocks of text from a file

Hi, This is part of a large text file I need to separate out. I'd like some help to build a shell script that will extract the text between sets of dashed lines, write that to a new file using the whole or part of the first text string as the new file name, then move on to the next one and... (7 Replies)
Discussion started by: cajunfries
7 Replies

5. Linux

Why does ext3 allocate 8 blocks for files that are few bytes long

The title is clear: why does ext3 allocate 8 blocks for files that are few bytes long? If I create a file named "test", put a few chars in it, and then I run: stat test I get that "Blocks: 8" I searched in the web and found that ext does that, it allocates 8 blocks even if It doesn't need... (4 Replies)
Discussion started by: Tavo
4 Replies

6. UNIX for Dummies Questions & Answers

X bytes of 0, Y bytes of random data, Z bytes of 5, T bytes of 1. ??

Hello guys. I really hope someone will help me with this one.. So, I have to write this script who: - creates a file home/student/vmdisk of 10 mb - formats that file to ext3 - mounts that partition to /mnt/partition - creates a file /mnt/partition/data. In this file, there will... (1 Reply)
Discussion started by: razolo13
1 Replies

7. Shell Programming and Scripting

Extract sequences based on the list

Hi, I have a file with more than 28000 records and it looks like below.. >mm10_refflat_ABCD range=chr1:1234567-2345678 tgtgcacactacacatgactagtacatgactagac....so on >mm10_refflat_BCD range=chr1:3234567-4545678... tgtgcacactacacatgactagtatgtgcacactacacatgactagta . . . . . so on ... (2 Replies)
Discussion started by: Diya123
2 Replies

8. Shell Programming and Scripting

Extract length wise sequences from fastq file

I have a fastq file from small RNA sequencing with sequence lengths between 15 - 30. I wanted to filter sequence lengths between 21-25 and write to another fastq file. how can i do that? (4 Replies)
Discussion started by: empyrean
4 Replies

9. Shell Programming and Scripting

Extract the part of sequences from a file

I have a text file, input.fasta contains some protein sequences. input.fasta is shown below. >P02649 MKVLWAALLVTFLAGCQAKVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQT LSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQA RLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKRLAVY... (8 Replies)
Discussion started by: rahim42
8 Replies

10. Shell Programming and Scripting

Blocks of text in a file - extract when matches...

I sat down yesterday to write this script and have just realised that my methodology is broken........ In essense I have..... ----------------------------------------------------------------- (This line really is in the file) Service ID: 12345 ... (7 Replies)
Discussion started by: Bashingaway
7 Replies

LEARN ABOUT DEBIAN

oggz-dump

oggz-dump(1)						      General Commands Manual						      oggz-dump(1)

NAME

       oggz-dump -- Hexdump packets of an Ogg file, or revert an Ogg file from such a hexdump

SYNOPSIS

       oggz-dump  [-b	|  --binary ]  [-x  | --hexadecimal ]  [-n  | --new ]  [-o filename  | --output filename ]  [-c content-type  | --content-
       type content-type ]  [-s serialno  | --serialno serialno ]  [-O	| --hide-offset ]  [-S	| --hide-serialno ]  [-G   |  --hide-granulepos  ]
       [-P  | --hide-packetno ] filename

       oggz-dump [-r  | --revert ]  [-o filename  | --output filename ] filename

       oggz-dump [-h  | --help ]  [-v  | --version ]

Description
       oggz-dump generates a hexadecimal or binary dump of packets in an Ogg file, or creates an Ogg file from a hexadecimal oggz-dump file.

Options
       oggz-dump accepts the following options:

   Dump format options
       -b, --binary
		 Generate a binary dump of each packet

       -x, --hexadecimal
		 Generate a hexadecimal dump of each packet

   Filtering options
       -n, --new Only dump the first packet of each new logical bitstream found; for correctly formed Ogg files, this dumps only the beginning-of-
		 stream packets.

       -c content-type, --content-type content-type
		 Dump only the logical bitstreams for a specific content-type.	Run oggz-known-codecs(1) for a full list of codecs  known  by  the
		 installed version of oggz.

       -s serialno, --serialno serialno
		 Dump only the logical bitstream with specified serialno.

       -O, --hide-offset
		 Hide  the  byte  offset field of the preamble for each packet dumped. This is particularly useful in conjunction with oggzdiff(1)
		 when comparing Ogg bitstreams that differ only in page structure.

       -S, --hide-serialno
		 Hide the serialno field of the preamble for each packet dumped. This is particularly useful in conjunction with oggzdiff(1)  when
		 comparing Ogg bitstreams that differ only in serialno assignment.

       -G, --hide-granulepos
		 Hide the granulepos field of the preamble for each packet dumped.

       -P, --hide-packetno
		 Hide the packetno field of the preamble for each packet dumped.

   Mode options
       -r, --revert
		 Revert an oggz-dump. Generates an Ogg bitstream as prescribed in the input oggz-dump.

		 The  serialno,  granulepos  and  packetno  fields  of the packet preambles in the oggz-dump, as well as any bos or eos markers if
		 present, are used to structure the packets into logical bitstreams. Hence it is advised that the original input oggz-dump not	be
		 generated with any hiding filters.

		 Only the hexadecimal data columns of the input oggz-dump are parsed when generating Ogg packet data; the printable character rep-
		 resentation is ignored.

   Miscellaneous options
       -o filename, --output filename
		 Write output to the specified filename instead of printing it to standard output.

       -h, --help
		 Display usage information and exit.

       -v, --version
		 Output version information and exit.

EXAMPLES

       Dump all bitstreams in file.ogg:

	      oggz dump file.ogg

       Dump only the Theora bitstream in file.ogv:

	      oggz dump -c theora file.ogv

AUTHOR

       Conrad Parker	    November 17, 2003;

COPYRIGHT

       Copyright (C) 2003 CSIRO Australia

SEE ALSO

       oggz-diff(1), hogg(1)	   xxd(1), hexdump(1)

																      oggz-dump(1)
All times are GMT -4. The time now is 01:57 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy