/usr/share/doc/radare2/bindiff is in radare2 0.9.6-3.1+deb8u1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25  | Bindiffing with r2
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Graph diffing:
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To find functions that are different from one to another binary:
  radiff2 -C a b  -> show report of all analyzed functions and say if they match or not
  # get graphs with colorized basic blocks of unmatching function 0x8034804
  radiff2 -g 0x8034804 a b > a.dot
  radiff2 -g 0x8034804 b a > b.dot
  xdot a.dot & xdot b.dot
  TODO: loading information from previous analysis
Byte diffing:
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  radiff2 /bin/true /bin/false
Delta byte diffing:
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  radiff2 -d /bin/true /bin/false
TODO: explain more modes and examples here...
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