1FILTERDIFF(1) Man pages FILTERDIFF(1)
2
6 filterdiff - extract or exclude diffs from a diff file
7
9 filterdiff [[-i PATTERN] | [--include=PATTERN]] [[-I FILE] |
10 [--include-from-file=FILE]] [[-p n] | [--strip-match=n]]
11 [--strip=n] [--addprefix=PREFIX] [--addoldprefix=PREFIX]
12 [--addnewprefix=PREFIX] [[-x PATTERN] | [--exclude=PATTERN]]
13 [[-X FILE] | [--exclude-from-file=FILE]] [[-v] |
14 [--verbose]] [--clean] [[-z] | [--decompress]] [[-# RANGE] |
15 [--hunks=RANGE]] [--lines=RANGE] [[-FRANGE] |
16 [--files=RANGE]] [--annotate] [--format=FORMAT]
17 [--as-numbered-lines=WHEN] [--remove-timestamps] [file...]
18 filterdiff {[--help] | [--version] | [--list] | [--grep ...]}
20
22 You can use filterdiff to obtain a patch that applies to files matching
23 the shell wildcard PATTERN from a larger collection of patches. For
24 example, to see the patches in patch-2.4.3.gz that apply to all files
25 called lp.c:
26 filterdiff -z -i '*/lp.c' patch-2.4.3.gz
28 If neither -i nor -x options are given, -i '*' is assumed. This way
30 filterdiff can be used to clean up an existing diff file, removing
31 redundant lines from the beginning (eg. the text from the mail body) or
32 between the chunks (eg. in CVS diffs). To extract pure patch data, use
33 a command like this:
34 filterdiff message-with-diff-in-the-body > patch
36 Note that the interpretation of the shell wildcard pattern does not
38 count slash characters or periods as special (in other words, no flags
39 are given to fnmatch). This is so that “*/basename”-type patterns can
40 be given without limiting the number of pathname components.
41 You can use both unified and context format diffs with this program.
43
45 -i PATTERN, --include=PATTERN
46 Include only files matching PATTERN. All other lines in the input
47 are suppressed.
48 -I FILE, --include-from-file=FILE
50 Include only files matching any pattern listed in FILE, one pattern
51 per line. All other lines in the input are suppressed.
52 -x PATTERN, --exclude=PATTERN
54 Exclude files matching PATTERN. All other lines in the input are
55 displayed.
56 -X FILE, --exclude-from-file=FILE
58 Exclude files matching any pattern listed in FILE, one pattern per
59 line. All other lines in the input are displayed.
60 -p n, --strip-match=n
62 When matching, ignore the first n components of the pathname.
63 -# RANGE, --hunks=RANGE
65 Only include hunks within the specified RANGE. Hunks are numbered
66 from 1, and the range is a comma-separated list of numbers or
67 “first-last” spans, optionially preceeded by a modifier 'x' which
68 inverts the entire range; either the first or the last in the span
69 may be omitted to indicate no limit in that direction.
70 --lines=RANGE
72 Only include hunks that contain lines from the original file that
73 lie within the specified RANGE. Lines are numbered from 1, and the
74 range is a comma-separated list of numbers or “first-last” spans,
75 optionially preceeded by a modifier 'x' which inverts the entire
76 range; either the first or the last in the span may be omitted to
77 indicate no limit in that direction.
78 -F=RANGE, --files=RANGE
80 Only include files indicated by the specified RANGE. Files are
81 numbered from 1 in the order they appear in the patch input, and
82 the range is a comma-separated list of numbers or “first-last”
83 spans, optionially preceeded by a modifier 'x' which inverts the
84 entire range; either the first or the last in the span may be
85 omitted to indicate no limit in that direction.
86 --annotate
88 Annotate each hunk with the filename and hunk number.
89 --format=unified|context
91 Use specified output format.
92 --strip=n
94 Remove the first n components of pathnames in the output.
95 --addprefix=PREFIX
97 Prefix pathnames in the output by PREFIX. This will override any
98 individual settings specified with the --addoldprefix or
99 --addnewprefix options.
100 --addoldprefix=PREFIX
102 Prefix pathnames for old or original files in the output by PREFIX.
103 --addnewprefix=PREFIX
105 Prefix pathnames for updated or new files in the output by PREFIX.
106 --as-numbered-lines=before|after
108 Instead of a patch fragment, display the lines of the selected
109 hunks with the line number of the file before (or after) the patch
110 is applied, followed by a TAB character and a colon, at the
111 beginning of each line. Each hunk except the first will have a line
112 consisting of “...” before it.
113 --remove-timestamps
115 Do not include file timestamps in the output.
116 -v, --verbose
118 Always show non-diff lines in the output. By default, non-diff
119 lines are only shown when excluding a filename pattern.
120 --clean
122 Always remove all non-diff lines from the output. Even when
123 excluding a filename pattern.
124 -z, --decompress
126 Decompress files with extensions .gz and .bz2.
127 --help
129 Display a short usage message.
130 --version
132 Display the version number of filterdiff.
133 --list
135 Behave like lsdiff(1) instead.
136 --grep
138 Behave like grepdiff(1) instead.
139
141 To see all patch hunks that affect the first five lines of a C file:
142 filterdiff -i '*.c' --lines=-5 < patch
144 To see the first hunk of each file patch, use:
146 filterdiff -#1 patchfile
148 To see patches modifying a ChangeLog file in a subdirectory, use:
150 filterdiff -p1 Changelog
152 To see the complete patches for each patch that modifies line 1 of the
154 original file, use:
155 filterdiff --lines=1 patchfile | lsdiff | \
157 xargs -rn1 filterdiff patchfile -i
158 To see all but the first hunk of a particular patch, you might use:
160 filterdiff -p1 -i file.c -#2- foo-patch
162 If you have a very specific list of hunks in a patch that you want to
164 see, list them:
165 filterdiff -#1,2,5-8,10,12,27-
167 To see the lines of the files that would be patched as they will appear
169 after the patch is applied, use:
170 filterdiff --as-numbered-lines=after patch.file
172 You can see the same context before the patch is applied with:
174 filterdiff --as-numbered-lines=before
176 patch.file
177 Filterdiff can also be used to convert between unified and context
179 format diffs:
180 filterdiff -v --format=unified context.diff
182
184 lsdiff(1), grepdiff(1)
185
187 Tim Waugh <twaugh@redhat.com>
188 Package maintainer
189patchutils 23 Jan 2009 FILTERDIFF(1)