This is old now, but it's probably worth noting that J addons contain an md5 implementation, and rosettacode has a J sha1 implementation. So hypothetically speaking you could do the whole thing in J (reading in each file and computing its hash).
There's probably some room to speed this up (but if you want real speed maybe what you'd do is abandon portability and buy a bitcoin miner). Thanks, -- Raul On Tue, Nov 26, 2013 at 12:54 PM, John Baker <bakerj...@gmail.com> wrote: > I'm looking for a portable nonGUI utility that will traverse entire > directories like dirtree and compute hashes (MD5, SHA1) on the contents of > the files. It would be nice if the same tool worked on the three major J > platforms, win, mac, linux. The tool must scale to directories containing > 100,000 files. > > Any suggestions? > > -- > John D. Baker > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
