batch hex editing

Kadabra · 03-26-2009, 03:27 AM

I need to batch edit a bunch of files in hexadecimal format. To be precise, I need to strip some zeros at the end of those files. Any ideas how I could do that?

JulianTosh · 03-26-2009, 03:47 AM

If you dont care about the \x00 anywhere else in the file:

Code:

echo -e -n "\x00AdmiralBeotch\x00" | tr -d '\0' | hexdump -C

Kadabra · 03-26-2009, 04:05 AM

Quote:

Originally Posted by Admiral Beotch

If you dont care about the \x00 anywhere else in the file:

Code:

echo -e -n "\x00AdmiralBeotch\x00" | tr -d '\0' | hexdump -C

The problem is that I do care about the other zeros and I need to strip only those at the very end of the file.

JulianTosh · 03-26-2009, 04:52 AM

Code:

echo -e -n "\x00test\x00\n\x00AdmiralBeotch\x00\x00" | sed '$s/\x00*$//;'  | hexdump -C

Kadabra · 03-26-2009, 05:03 AM

Quote:

Originally Posted by Admiral Beotch

Code:

echo -e -n "\x00test\x00\n\x00AdmiralBeotch\x00\x00" | sed '$s/\x00*$//;'  | hexdump -C

Thanks, seems to be just what I needed