a. The name of a UNIX utility (written by Larry Wall) that applies a script generated by the diff program to a set of files, allowing changes from one file to be automatically applied to another file. b. A set of diffs suitable for input to the patch program. Patches are a common way of supplying small updates to pieces of software where the source code is available. c. A fix for a software program where the actual binary executable and related files are fixed. SeePatch (computing)
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