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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.
Displaying the differences between two or more sets of data, file comparison tools can make computing simpler, and more efficient by focusing on new data and ignoring what did not change. Generically known as a diff [ 1 ] after the Unix diff utility , there are a range of ways to compare data sources and display the results.
The difference is an exact number of quarters of an hour up to 95 (same minutes modulo 15 and seconds) if the file was transported across zones; there is also a one-hour difference within a single zone caused by the transition between standard time and daylight saving time (DST). Some, but not all, file comparison and synchronisation software ...
Propagate renaming/moving of a file/directory. This saves bandwidth for remote systems but increases the analysis duration. Commonly done by calculating and storing hash function digests of files to detect if two files with different names, edit dates, etc., have identical contents. Programs which do not support it, will behave as if the ...
In computing, cmp is a command-line utility on Unix and Unix-like operating systems that compares two files of any type and writes the results to the standard output.By default, cmp is silent if the files are the same; if they differ, the byte and line number at which the first difference occurred is reported.
A data comparison utility that outputs the differences between two files. GNU GPL: E2fsprogs: e2fsprogs (sometimes called the e2fs programs) is a set of utilities for maintaining the ext2, ext3 and ext4 file systems. GNU GPL: Elfutils: A collection of utilities and libraries to read, create and modify ELF binary files. GNU GPL and GNU LGPL: Eudev
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.
Main concerns for data differencing are usability and space efficiency (patch size).. If one simply wishes to reconstruct the target given the source and patch, one may simply include the entire target in the patch and "apply" the patch by discarding the source and outputting the target that has been included in the patch; similarly, if the source and target have the same size one may create a ...