Programming :: Search And Replace In A Binary File?

Aug 11, 2010

i need to change a binary file, let's say to find and replace username:

find string: "/home/name/bla-bla-bla/ "
new string: "/home/anewname/bla-bla-bla/ "

i can do it, for example, in emacs (hexl-mode), but interesting in writing a script instead. it will be much more better for me if i could do it automatically. is there an analog of: sed 's/string1/string2/g' ? P.S. the best way is to recompile the binary files i have, but there are no sources available.

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Programming :: Bash Search Line And Replace Hex To Binary?

Jul 7, 2011

I need a command to search a string in a file and then to convert the next string in the same line from hexadecimal to binary. I was able to put everything in capitals. The original file can be as such:

E 2
C 1 794
T ffff
E 2
C 1 787

It is not always FFFF! I am trying to do this in a file at once, not reading line by line (using while).

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Programming :: Multi File Recursive Folder Search And Replace?

Aug 3, 2010

I'm wanting to mod some PHP files across a hierarchy and thought I'd drive it with find + grep + xargs

I built up a command line which I was confident would do the job, but now can't save the results.

First I tried this:

Code:
find . -name *.php | xargs grep serialize | cut -d: -f1| sort -u | xargs sed -i s/serialize/serialise/g
but that didn't work:
Code:
sed: illegal option -- i
so I thought I'd try using
Code:

[Code].....

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Programming :: Sed One-liner: Search Text In File And Replace It - If Not Present Insert It?

Oct 16, 2010

As indicated in the subject, I want to search a text. If the text is present I want to replace it. But if the text is not present, I want to insert it after first line and before last line.

Searched text is:CleanCache "*";

Where * can be anything.

Example: CleanCache "false"; -> CleanCache "true";

If CleanCache "false"; is not present, only insert CleanCache "true"; after first line and before last line.

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Programming :: Write A Utility Which Will Scan In A Text File And Search And Replace Strings?

Jul 16, 2010

Something very handy to do in a Linux shell, is manipulating files and strings - essentially parsing data. Write a utility which will scan in a text file and search and replace strings. We also want to keep track of how many strings we've replaced.

I know that my command would look like this: <utility name> <filename> <stringToSearchFor> <stringToReplaceWith>
Code: #!/bin/bash

[code]....

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Programming :: Search A File For A Particular Pattern And If Pattern Found Replace The Line With New Text?

Feb 24, 2010

I want to search a file for a particular pattern and if pattern found replace the line with new text. i am using awk 'match($0,"pattern") != 0 {print $0} ' filename to check if the pattern exists.how do i get the line number of the pattern and delete that line and replace the line with my new text?

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Programming :: Algorithm For Binary Frequency Search?

Jul 16, 2010

I've got a bit of an obscure question for you to test your brains a wee bit. I'm trying to implement a search program to find areas of high density in a binary string.

E.g.

Code:

[0001001010
0001110001
0000001000
1001000010
0101100100]

Where density is the number of 1's / number of digits with a maximum number of digits being the current number in a buffer (in this example 50). So for the example the density for the whole buffer is 15/50. But the density of Buffer[14..20]=[1110001]=4/7. So if looking for areas of density = 1/3 it would find the longest sequences of density over 1/3.So in the example. Buffer[4..9]=[100101]=3/6=1/2 which is above 1/3 but it is within the Buffer[4..48]=[100101000011100010000001000100100001001011001]=15/45=1/3

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Programming :: Finding A Utility To Combine Two Or More Binary Files Into A Single Binary File?

May 5, 2011

Is there any Linux utility to combine two or more binary files into a single binary file ?

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Programming :: Using Sed To Search And Replace Backwards?

Oct 25, 2010

I'm trying to use sed to search and replace backwards. The problem is that I have a shell script that is required to put commas into big numbers. For example

9999999 as 9,999,999

I've tried a few things, but none seem to work:

Code:

$ echo 9999999 | sed -e 's/([0-9]{3})/,1/g'
,999,9999
$ echo 9999999 | sed -e 's/([0-9]{3})$/1,/g' -e 's/([0-9]{3})/1,/g'
999,999,9,
$ echo 9999999 | sed -e 's/([0-9]{3})$/1,/g' -e 's/([0-9]{3})/,1/g'

[ode]....

It would be much easier if I could search backwards! For example Bash parameter substitution style:

Code:
$ echo 9999999 | sed -e 's%([0-9]{3})%,1%g'

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Programming :: Awk Multiple Line Search And Replace?

May 1, 2011

I am trying to search and replace a multi line pattern in a php file using awk.The pattern starts with

<div id="navbar">
and ends with
</div>

[code]...

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General :: Shell Script To Search One File For Contents Of Another And Replace Text?

Feb 3, 2011

Suppose I have a pair of files containing lists. The first file is called contigs.txt and it contains a list that looks like this:

Code:
Contig822
Contig826

[code]...

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Programming :: Convert An Arbitrary Binary File Into A Executable File?

Feb 18, 2010

In a project I'm working on with a few other people, I got the task of writing an assembler. The last thing I do is convert the commands into a binary representation, and jam it into a file. Now one of my teammates said he'd like to be able to "reference" the code within another program. He said he'd be able to do this if the file I output is a Linux object file. I'm thinking it'd also work as an executable. Anyway, he said he'd like to be able to grab the file and reference the binary by address. I'm still fuzzy on this, and if you're confused with what I said here, please tell me so I can ask him for better details.Anyway, I'm aware that gcc can compile files to ".o", but that's only for C/C++, and my file is just binary. I'm also aware of "ld", but I haven't seen any use of it to help me. I'm happy to hear suggestions as to what I can do. If anything, I think I'll implement a few functions to grab the bits and hand them to him in an array or something.

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Programming :: Binary File Cannot Be Found?

Jan 28, 2010

I get this error when I run the program that i created using eclipse.How to fix this?

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Programming :: Cannot Execute Binary File

Feb 11, 2011

I'm trying to compile a simple script for a ar71xx (bleeding edge /from snapshots) Openwrt router.I have previously compiled scripts for Kamikaze 8.09. I just copied the gcc file inside the SDK dir and used it without problems.

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Programming :: Version Info Coded Into ELF Binary / Author And Company Name Into ELF Binary?

Nov 30, 2010

How to coded version info and other information likes author and company name into the ELF binary?

I prefer the put the version info during build step.

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Programming :: Unable To Disassemble A Binary File?

Apr 15, 2011

I want to be able to disassemble a binary file, modify the assembly source, then assemble the modified assembly source back into a modified binary file. Purpose for this is pretty much just to play around with the Crackmes (www.crackmes.de) game.

Now, disassembly is easy, there are several tools that do it, including the standard objdump with the -d argument. However, how would you assemble an assembly source file created with objdump -d? GCC for sure doesn't want to assemble it in that format. What program, script, or arguments to GCC (none that I can think of) can be used to accomplish this? If someone also has some good tips for tools in general for Crackmes beyond what is standard in GNU/Linux I'd love to hear about it.

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Programming :: Reading A Binary File Which Is In Hexadecimal

Jan 9, 2011

I have a binary file, which I need to process using my C++ application. Only thing I know is first chunk of the file is long, second chunk is int, third chunk is char etc... The binary file actually contains something like below. (which is represented in hex base).

D7 07 00 00 00 00 00 00 37 18 00 00 DE 07 ............ so on.....

I need to procees the file in the following way.

* I know the first data segment in my file is long. So it takes 4 bytes.
* so I need to read the first four bytes. That is D7 07 00 00.
* Then I need to reverse this as 00 00 07 D7.
* Finally I need to get the decimal value of above hexa decimal line. ( 00 00 07 D7)
* i.e. 00 00 07 D7 (in hex) = 7D7 (in hex- after removing leading 0 s) = 2007 (in decimal)

Like wise I need to process the whole file.

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Programming :: Removing Symbols From Binary Executable File

Aug 21, 2010

Arm-linux-strip for removing the symbols from binary executable file after compilation. What exactly the symbols means.

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Programming :: Copying A Binary Image File To The Framebuffer?

Jul 14, 2010

I'm running Linux version 2.6.33.4 on an ARM9 and can successfully copy directly into the framebuffer using the command:

Code:
cat /usr/myfile.bin >/dev/fb0

I converted myfile.bin from a 640 x 480 x 24 bmp.

What I'd like to do is to have the ability to dump .bin image files directly into the framebuffer from a C program without shelling out to a cat command.

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Programming :: Make A Binary Tree From An External File?

Dec 7, 2010

My assessment is making a tree from a text file as follows: -reading a file line by line

-making a binary tree from it
- traverse by level the binary tree
- posting the traversal result to the same file without overwriting the text file- it is required to be append to the bottom of the text file (i have to do this in 4 languages: c#,PHP from Xampp,java, python)

i read the file with this script in java:
public class FileToStringArray {
privateString strLine;
privateString[] stringArray;
privateFileInputStream in;

[Code]...

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Programming :: What Is The Terminology Called Of A Binary Using A File That Is Not Part Of It's Self

Feb 14, 2011

What is the Terminology called of a Binary using a file that is not part of it's self? An example would be when a browser uses a HTML file for it's interface. The binaries code has to know how to find it and so on. I imagine that the applications binary uses a system call and that another application takes over.

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Programming :: Perl Find File And Then Replace String In File

Jul 28, 2009

I have script that I'm working on that updates a username in all the files that are called blah.inc for my framework. since i host a bunch of these web apps i need to do it to all of them. so I need to figure out how to update these files automagically with out me watching it to call vim every time. heres what I have so far

Code:

This finds the files but now i need to figure out how to do s/bob/fred/g on those files.

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Programming :: Reading A Binary File (Ignoring Null Terminator)

Jan 12, 2011

I need to read a binary file using my C++ application. That binary file may contain arbitary characters and it also contains 0 at some places. I need to read the file without considering null terminating character. (i.e. considering 0 as a normal byte and not as the end of the string)Can some one suggest me a method to read the buffer while ignoring the null terminated character.

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Programming :: Saving A PPM File - Binary Representation Of Unsigned Chars On The Harddrive

Apr 7, 2010

I am accessing a firewire camera using the libdc1394 library and saving the image as a PPM file, using the code below:

[Code].....

My question is whether the above code is portable. I presume it is, since the result is a binary PPM file which should be capable of being read across multiple computers with different architectures and different operating systems. But at the same time, all that the above code is doing is just saving the binary representation of unsigned chars on the harddrive, and there does not seem to be any reason why the binary representations of the unsigned chars will be identical across multiple computers.

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Programming :: Using File As Replace In Sed

Mar 1, 2011

I have a file, "outfile" what I wish to insert into a file called template where it finds "OVERRIDES". I am getting an error.

Code:

However I can do something like this and it works fine

Code:

I am guessing its because of the file size or multiple lines.

A sample of the outfile text is below

Code:

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Programming :: How To Search For A File?

Feb 3, 2010

How to search for a file? I am looking for a file in a directory /shared/domain...This also contains many sub directories..I need a script which will let me know the location of my log file myapps.log.what is the script ?Can it be made in one line ...because I just want to run ...don't want to save the script.

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Programming :: Replace A String Within A File ?

Feb 28, 2009

I've found some scripts that replaces a string in a file but it's not quite working for me.

And I'm trying to replace a tag in an xml file that looks like this

So I ran a command line like this perl -w -i -p -e "s/xmlns="'http://mydomain.org/replacethese.xsd'">/>/g" testfile.xml

And I get a error output

Search pattern not terminated at -e line 1.

Found the script from this blog [url]

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Programming :: Replace Part Of A File With Another?

Jan 8, 2010

There are a few things I was wondering about (using tools available in bash):How to insert a file at at the specified location of another.How to copy a portion of a file between two lines matching a regex to another file (and/or making sed only work between two lines matching a regex)How would you do this?

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Programming :: Recursive Search In A Tar.bz2 File?

Jul 14, 2011

I am looking for a one liner to search for a string in file(s) which are in a tar ball (.tar.bz2 in my case)

Code:
-bash-3.2$ tar -tjf /var/log/ABC/07142011-1412.tar.bz2
var/log/ABC/07142011-1412/
var/log/ABC/07142011-1412/live_hosts.txt
var/log/ABC/07142011-1412/all_hosts.txt
var/log/ABC/07142011-1412/LOGS.txt

How can I recursively look inside all the txt files in this tar file ?

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Programming :: Replace 2nd Occurrence Of A String In A File - Sed Or Awk?

Apr 5, 2010

I know how to replace a particular instance (say 3rd one) of a word in a line using sed based on the sed one-liners. However I would like to replace a particular instance of a word in the entire file.

For example, here is a file:

Code:
John
Betty
Jack
Ron
Jack
Paul

So now I would like to replace the second instance of Jack (in red color) with "Rob" (for example). Not quite sure how to do that? I tried couple of things from here but they did not work.

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