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What (who) is diff - definition

STANDARD UNIX UTILITY FOR FILE COMPARISON

.diff; Unidiff; Context format; Unified format; Sdiff; Diffmk; Unified diff; Diff (Unix); Diffutils; Spiff (Unix); Spiff (UNIX); Colordiff; Unified diff format; Unipatch; Diff utility

diff

/dif/ 1. A change listing, especially giving differences between (and additions to) different versions of a piece of source code or documentation (the term is often used in the plural "diffs"). "Send me your diffs for the Jargon File!" Compare vdiff. 2. Specifically, such a listing produced by the diff Unix command, especially when used as input to the patch utility (which actually performs the modifications). This is a common method of distributing patches and source updates. 3. To compare (whether or not by use of automated tools on machine-readable files). See also vdiff, mod. [Jargon File] (1995-02-10)

Locking differential

FORCING TWO TRANSAXIAL WHEELS TO SPIN TOGETHER

Locking differentials; Diff lock; Detroit Locker; Detroit No-Spin; Locking rear differential; Differential lock; Self-locking center differential; Self-locking differential; Electronic Differential Lock; Electronic differential lock

A locking differential is a mechanical component, commonly used in vehicles, designed to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on a common shaft. This forces both wheels to turn in unison, regardless of the traction (or lack thereof) available to either wheel individually.

https://en.wikipedia.org/wiki/Locking_differential

Difference in differences

STATISTICAL METHOD

Difference-in-difference; Difference in difference; Difference-in-differences; Diff in diff; Diff-in-diff

Difference in differences (DID or DD) is a statistical technique used in econometrics and quantitative research in the social sciences that attempts to mimic an experimental research design using observational study data, by studying the differential effect of a treatment on a 'treatment group' versus a 'control group' in a natural experiment. It calculates the effect of a treatment (i.

https://en.wikipedia.org/wiki/Difference_in_differences

Wikipedia

Diff

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. The utility displays the changes in one of several standard formats, such that both humans or computers can parse the changes, and use them for patching.

Typically, diff is used to show the changes between two versions of the same file. Modern implementations also support binary files. The output is called a "diff", or a patch, since the output can be applied with the Unix program patch. The output of similar file comparison utilities is also called a "diff"; like the use of the word "grep" for describing the act of searching, the word diff became a generic term for calculating data difference and the results thereof. The POSIX standard specifies the behavior of the "diff" and "patch" utilities and their file formats.

https://en.wikipedia.org/wiki/Diff

Examples of use of diff

1. "C diff kills people and the more we have to fight C diff the better.

2. "After her second course, she contracted C. diff.

3. Military and police officials stood by sharply diff...

4. The presence of C. diff was recorded on death certificates.

5. The colonisation of the gut by C. diff is made possible by the use of antibiotics that kill off protective bacteria in the gut, enabling C. diff to multiply.