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Manpages DIFFSTATSection: User Commands (1)Index Return to Main Contents NAMEdiffstat - make histogram from diff-outputUSAGEdiffstat [options] [file-specifications]SYNOPSISThis program reads the output of diff and displays a histogram of the insertions, deletions, and modifications per-file.DESCRIPTIONDiffstat is a program that is useful for reviewing large, complex patch files. It reads from one or more input files which contain output from diff, producing a histogram of the total lines changed for each file referenced. If the input filename ends with .Z or .gz, diffstat will read the uncompressed data via a pipe.Diffstat recognizes the most popular types of output from diff:
Diffstat detects the lines that are output by diff to tell which files are compared, and then counts the markers in the first column that denote the type of change (insertion, deletion or modification). These are shown in the histogram as "+", "-" and "!" characters. If no filename is given on the command line, diffstat reads the differences from the standard input. OPTIONS
ENVIRONMENTDiffstat runs in a portable UNIX® environment. FILESDiffstat is a single binary module, which uses no auxiliary files. BUGSDiffstat makes a lot of assumptions about the format of a diff file. There's no easy way to determine the degree of overlap between the "before" and "after" displays of modified lines. SEE ALSOAUTHORThomas Dickey (dickey@clark.net).
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