Utility to change raw data?

1337

Is there a linux tool I can use that can change raw data inside a file?

For instance say I wanted to change byte 2345 and forward in the file raw.bin to something else.

Something like:
alter-data --pos=2345 --new_data="8718\r\n0x23abc\0x00" raw.bin

Any suggestions on what to use?

scottalanmiller

I think what you want is a hex editor.

https://www.tecmint.com/best-hex-editors-for-linux/

1337

@scottalanmiller said in Utility to change raw data?:

I think what you want is a hex editor.

https://www.tecmint.com/best-hex-editors-for-linux/

No, I don't want it to do it interactively. If it was text I don't want something like vim, I want something like sed, awk etc.

1337

I think I might have a solution with dd and printf.

printf "8718\r\n0x23abc\0x00" | dd of=raw.bin seek=2345 oflag=seek_bytes

Something like that.

scottalanmiller

@Pete-S said in Utility to change raw data?:

I think I might have a solution with dd and printf.

printf "8718\r\n0x23abc\0x00" | dd of=raw.bin seek=2345 oflag=seek_bytes

Something like that.

Interesting. Makes sense though.