Binary compare files linux
For example, cmp -l file1. Unfortunately, this gives me awk: Specific AWK implementation perhaps? In any case, GAWK can be installed and set to the default see also man update-alternatives. See my updated answer for a solution that doesn't require strtonum. This worked great for me with opendiff on OS X instead of vimdiff — the default view xxd provides keeps the diff engine on track comparing byte-by-byte. This command does not work well for byte addition removal, as every line that follows will be misaligned and seen as modified by diff.
The solution is to put 1 byte per line and remove the address column as proposed by John Lawrence Aspden and me. Your answer is perfect okay for small files, but not so okay for big ones.
DHEX is awesome is comparing binaries is what you want to do. Feed it two files and it takes you right to a comparative view, highlighting to differences, with easy ability to move to the next difference. Also it's able to work with large terminals, which is very useful on widescreen monitors. VBinDiff doesn't work with wide terminals though. But the addresses become weird with wide terminals anyway, since you have more than 16 bytes per row.
DanielBeauyat compressed files will be completely different after you encounter the first different byte. The output is not likely to be useful. But, as Mark Ransom said, that would be generally not wise on compressed files; the exception is "synchronizable" compressed formats like that produced by gzip --rsyncable , in which small differences in the uncompressed files should have a limited effect on the compressed file.
If you don't have colordiff, this will do the same thing without colors: If you just want to know whether both files are actually the same, you can use the -q or --brief switch, which will only show output when the files differ.
I prefer od over xxd because: It is crucial to have one byte per line, or else every line after a deletion would become out of phase and differ. I'd recommend hexdump for dumping binary files to textual format and kdiff3 for diff viewing.
BugoK 1 4. Evgeny 1 7 Of course, one may use diff instead of vimdiff. The hexdiff is a program designed to do exactly what you're looking for.
But it does a pretty bad job when it comes to the comparing part. It may not strictly answer the question, but I use this for diffing binaries: John Lawrence Aspden 2 6 Can it be used on arbitrary binary files, though? That page seems to indicate that it's only useful for comparing executables that have been disassembled by Hex-Rays IDA Pro. Although this software looks like it could solve the OP's problem, pure advertisement is strongly frowned upon on the Stack Exchange network.
If you are affiliated to this software's editor, please disclose this fact. Or you might be comparing documents that are in a format used by a word processing system that uses null characters to indicate special formatting. You can force diff to consider all files to be text files, and compare them line by line, by using the --text -a option. If the files you compare using this option do not in fact contain text, they will probably contain few newline characters, and the diff output will consist of hunks showing differences between long lines of whatever characters the files contain.
You can also force diff to report only whether files differ but not how. Use the --brief -q option for this. In operating systems that distinguish between text and binary files, diff normally reads and writes all data as text. Use the --binary option to force diff to read and write binary data instead.
However, many personal computer operating systems represent the end of a line with a carriage return followed by a newline. On such systems, diff normally ignores these carriage returns on input and generates them at the end of each output line, but with the --binary option diff treats each carriage return as just another input character, and does not generate a carriage return at the end of each output line.
This can be useful when dealing with non-text files that are meant to be interchanged with POSIX-compliant systems. The --strip-trailing-cr causes diff to treat input lines that end in carriage return followed by newline as if they end in plain newline.