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    $\begingroup$ take WReaches module: myFunction[file_]:=Module[...] then make a list of your files: ls = FileNames["*.csv", "/path/to/files", 2] and then map that list onto your function to get the last line from all files. Then you can save this to a new files. You can also join the files names to the output so that each last line is associated with its filename. $\endgroup$ Commented Jul 22, 2014 at 5:51
  • $\begingroup$ You may also refer to this. $\endgroup$ Commented Jul 22, 2014 at 7:46
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    $\begingroup$ You can even make a palette! (OK I guess it won't work with hundreds of files, but self-promotion is self-promotion) $\endgroup$ Commented Jul 22, 2014 at 11:20