Radiff2 is a tool designed to compare binary files, similar to how regular diff compares text files.
$ radiff2 -h
Usage: radiff2 [-abBcCdjrspOxuUvV] [-A[A]] [-g sym] [-t %] [file] [file]
-a [arch] specify architecture plugin to use (x86, arm, ..)
-A [-A] run aaa or aaaa after loading each binary (see -C)
-b [bits] specify register size for arch (16 (thumb), 32, 64, ..)
-B output in binary diff (GDIFF)
-c count of changes
-C graphdiff code (columns: off-A, match-ratio, off-B) (see -A)
-d use delta diffing
-D show disasm instead of hexpairs
-e [k=v] set eval config var value for all RCore instances
-g [sym|off1,off2] graph diff of given symbol, or between two offsets
-G [cmd] run an r2 command on every RCore instance created
-i diff imports of target files (see -u, -U and -z)
-j output in json format
-n print bare addresses only (diff.bare=1)
-O code diffing with opcode bytes only
-p use physical addressing (io.va=0)
-q quiet mode (disable colors, reduce output)
-r output in radare commands
-s compute edit distance (no substitution, Eugene W. Myers' O(ND) diff algorithm)
-ss compute Levenshtein edit distance (substitution is allowed, O(N^2))
-S [name] sort code diff (name, namelen, addr, size, type, dist) (only for -C or -g)
-t [0-100] set threshold for code diff (default is 70%)
-x show two column hexdump diffing
-u unified output (---+++)
-U unified output using system 'diff'
-v show version information
-V be verbose (current only for -s)
-z diff on extracted strings