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SVN, CVS, Git, Microsoft TFS, Perforce, VSS using command line Yes diff: No No No Yes Yes with patch Yes with patch No No diff3: No No No Eclipse (compare) Yes CVS, Subversion, Git, Mercurial, Baazar: Yes Ediff: Yes Yes RCS, CVS, SVN, Mercurial, git (anything supported by Emacs' VC-mode) [36] Yes Yes Yes ExamDiff Pro: Yes [37] Yes [38] normal ...
In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it is like Levenshtein distance in that it tries to determine the smallest set of deletions and insertions to create one file from the other.
Prior to August 2018, a diff could be kept clearer (simpler), by first using a separate edit to insert blank lines plus move the text paragraphs, then after saving, in further revisions, add or change text within the moved paragraphs. Only if paragraphs are both split and reworded in the same revision, then the specific new words cannot be ...
Unstructured merge operates on raw text, typically using lines of text as atomic units. This is what Unix tools (diff/patch) and CVS tools (SVN, Git) use. This is limited [opinion], as a line of text does not represent the structure of source code.
The optimal way to display the results of a file comparison depends on many factors, including the type of source data. The fixed lines of programming code provide a clear unit of comparison. This does not work with documents, where adding a single word may cause the following lines to wrap differently, but still not change the content.
Meld is a visual diff and merge tool, targeted at developers. It allows users to compare two or three files or directories visually, color-coding the different lines. Meld can be used for comparing files, directories, and version controlled repositories.
Delta copying is a fast way of copying a file that is partially changed, when a previous version is present on the destination location. With delta copying, only the changed part of a file is copied. It is usually used in backup or file copying software, often to save bandwidth when copying between computers over a private network or the internet.
One might be dealing with commands that can only accept one or maybe two arguments at a time. For example, the diff command operates on two files at a time. The -n option to xargs specifies how many arguments at a time to supply to the given command. The command will be invoked repeatedly until all input is exhausted.