diff command outputs, not files

You can easily diff the output of commands instead of files. In this case hexdump prints thousands of lines, but I’m only interested in the difference:

# diff <(hexdump file1.bin) <(hexdump file2.bin)
1,2c1,2
< 0000000 6a49 b610 0000 0000 5733 7261 4465 4243
< 0000010 0000 0000 0001 0000 9006 4e0b 0b28 000f
---
> 0000000 6a49 b616 0000 0000 5733 7261 4465 4243
> 0000010 0000 0000 0001 0000 9006 4e11 0b28 000f

Run the hexdump in subshell using parenthesis, then redirect the output back to diff. I’m only interested in the 2 pieces that are different for each binary file:

# for i in `ls *.bin | sort -nk1.7`; do echo -n "$i: "; hexdump -C $i | grep '33 57 61 72 65 44\|4e 28 0b 0f 00' | awk '{if(NR==1) print $4;if(NR==2) print $12}' | paste - -; done | column -t 2>/dev/null
file0.bin:   1a  15
file1.bin:   19  14
file2.bin:   18  13
file3.bin:   17  12
file4.bin:   16  11
file5.bin:   15  10
file6.bin:   14  0f
file8.bin:   12  0d
file9.bin:   11  0c
file10.bin:  10  0b
file12.bin:  0e  09
file13.bin:  0d  08
file14.bin:  0f  0a
file15.bin:  0b  06
file16.bin:  0a  05
file17.bin:  09  04
file18.bin:  08  03
file19.bin:  07  02
file20.bin:  06  01
file21.bin:  05  00
file22.bin:  0c  07
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