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The file types addressed by individual file comparison apps varies but may include text, symbols, images, audio, or video. This category of software tool is often called "file comparison" or "diff tool", but those effectively are equivalent terms — where the term "diff" is more commonly associated with the Unix diff utility.
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.
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.
To compare binary files, a tool may use byte-level comparison. Comparing text files or computer programs, many tools use a side-by-side visual comparison. [5] This gives the user the chance to choose which changes to keep or reject before merging the files into a new version. [6]
ExamDiff Pro is a commercial software utility for visual file and directory comparison, for Microsoft Windows. ExamDiff Pro has a double-pane view that allows side-by-side comparisons, with color-coded line numbers indicating whether each line is added, deleted, or changed. ExamDiff Pro can compare text and binary files, and directories.
In computing, fc (File Compare) is a command-line program in DOS, IBM OS/2 and Microsoft Windows operating systems, that compares multiple files and outputs the differences between them. [2] [3] It is similar to the Unix commands comm, cmp and diff.
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tkdiff uses colors to suggest differences between files and within shared lines. tkdiff is a graphical diff viewer based on the Tk framework. [1] It is capable of inter-operating with source-control systems like CVS and Subversion to show the differences between the local copy and the repository version.