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Groups > comp.os.linux.advocacy > #689977

Re: Need Help: Replace Bytes In Binary File

From Farley Flud <ff@linux.rocks>
Subject Re: Need Help: Replace Bytes In Binary File
Newsgroups comp.os.linux.advocacy
References <pan$def57$d367618d$5365ea3b$700171a@linux.rocks> <vv82pn$29efv$4@dont-email.me> <pan$469e9$5479b7cb$3265e5a7$145bcea7@linux.rocks>
Message-Id <pan$883eb$94630766$6fffee5$582c1c40@linux.rocks>
Date 2025-05-04 21:14 +0000
Organization UsenetExpress - www.usenetexpress.com

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On Sun, 04 May 2025 19:23:22 +0000, Farley Flud wrote:

> On Sun, 4 May 2025 11:57:43 -0400, Chris Ahlstrom wrote:
> 
>> 
>> This link has some ideas:
>> 
>>     https://stackoverflow.com/questions/4783657/write-byte-at-address-hexedit-modify-binary-from-the-command-line
>> 
> 
> That does work on my files.
> 
> printf '\x49\x4e\x41\x52\x59' | dd of=$1 bs=1 seek=7 count=5 conv=notrunc
> 
> But the offset has to known beforehand and the replacement bytes
> have to be entered manually.  It's just as slow as using search and
> replace with a hex editor.
>

For the record, I just discovered another program that is designed
to search/replace on binary files in the manner of sed:

https://sourceforge.net/projects/bbe-/

I am very surprised that there are not more such utilities.

Bbe seems to have a bit of a learning curve.  For now, I'll stick
to manual editing with Hexditor.


-- 
Systemd: solving all the problems that you never knew you had.

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Thread

Need Help: Replace Bytes In Binary File Farley Flud <ff@linux.rocks> - 2025-05-04 15:32 +0000
  Re: Need Help: Replace Bytes In Binary File Chris Ahlstrom <OFeem1987@teleworm.us> - 2025-05-04 11:57 -0400
    Re: Need Help: Replace Bytes In Binary File Farley Flud <ff@linux.rocks> - 2025-05-04 19:23 +0000
      Re: Need Help: Replace Bytes In Binary File Farley Flud <ff@linux.rocks> - 2025-05-04 21:14 +0000
        Re: Need Help: Replace Bytes In Binary File vallor <vallor@cultnix.org> - 2025-05-04 21:39 +0000
          Re: Need Help: Replace Bytes In Binary File vallor <vallor@cultnix.org> - 2025-05-04 21:47 +0000
            Re: Need Help: Replace Bytes In Binary File % <pursent100@gmail.com> - 2025-05-04 17:16 -0700
            Re: Need Help: Replace Bytes In Binary File Farley Flud <ff@linux.rocks> - 2025-05-05 08:14 +0000
          Re: Need Help: Replace Bytes In Binary File % <pursent100@gmail.com> - 2025-05-04 17:15 -0700

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