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Full Discussion: Diff for multiple files
Top Forums UNIX for Dummies Questions & Answers Diff for multiple files Post 302813897 by bakunin on Tuesday 28th of May 2013 09:54:22 AM
Old 05-28-2013
It might help if you could clarify which files exactly you are searching for. If, for instance, a file exists in dir1 and dir2, but not in dir3 and dir4, should it be included or not? How about a file existing in dir1, dir2, dir3 but not in dir4? Does "dir1" take any precendence or should a file existing in dir1 and dir2 but not in dir3 and dir4 be treated the same as one existing in dir2 and dir4 but not in dir1 and dir3?

In other words, could you clarify the rules by which you want to find files? A possible solution (maybe not even relying on "diff") wil depend on how you answer these questions.

I hope this helps.

bakunin
 

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LEARN ABOUT OSX

opendiff

opendiff(1)						    BSD General Commands Manual 					       opendiff(1)

NAME

     opendiff -- Use FileMerge to graphically compare or merge file or directories

SYNOPSIS

     opendiff file1 file2 [-ancestor ancestorFile] [-merge mergeFile]
     opendiff dir1 dir2 [-ancestor ancestorDirectory] [-merge mergeDirectory]

DESCRIPTION

     opendiff is a command line utility that provides a convenient way to launch the FileMerge application from Terminal to graphically compare
     files or directories.  If FileMerge is already running, opendiff will connect to that running instance for the new comparison.  opendiff
     exits immediately after the comparison request has been sent to FileMerge.

     opendiff and FileMerge can be used to compare two files file1 and file2 or to compare two directories dir1 and dir2.

     If the -ancestor flag is given, FileMerge will compare the two files or directories to a common ancestor.	This is useful if two people inde-
     pendently modify copies of a single original file or directory.

     FileMerge lets you merge two files or directories together to create a third file or directory.  To see the contents of a merged file, drag
     the splitter bar at the bottom of FileMerge's file comparison window.  The contents of the merged file can be directly edited within File-
     Merge.  After editing, the merged file can be saved to the file (or into the directory) specified with the Fl merge flag.	If a destination
     is not specified with the -merge flag, FileMerge will ask for a destination file or directory when you try to save a merged file.

     For further information, please consult the Help information available from the FileMerge application.

FILES

     /Developer/Applications/Utilities/FileMerge.app

     opendiff and FileMerge are installed as part of the Mac OS X Developer Tools.

SEE ALSO

     diff(1), diff3(1), cmp(1)

Mac OS X							  August 3, 2004							  Mac OS X
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