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Since I develop backup software, this is a problem I needed to solve (e.g., for verifying that restore works). So I wrote a tool: http://liw.fi/summain/ http://

• voltagex_ 10y ago
  That's a neat looking application - bonus points for a good manpage, too. That said, how does it handle firstpath/somefile.bin and secondpath/somefile.bin being identical? This breaks your "diffable" output because the paths are different.
  • liw 10y ago
    You run it in such a way that the paths are identical. For example, by using the -r option. $ mkdir foo $ echo foo > foo/bar $ cp -a foo foo2 $ summain -r foo > foo.summain $ summain -r foo2 > foo2.summain $ diff foo*.summain