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filterdiff (1)
  • >> filterdiff (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
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    NAME

    filterdiff - extract or exclude diffs from a diff file
     
    

    SYNOPSIS

    filterdiff [-i PATTERN] [-p n] [--strip=n] [--addprefix=PREFIX] [-x PATTERN] [--verbose] [-v] [-z] [[-# RANGE] [--hunks=RANGE]] [--lines=RANGE] [--files=RANGE] [--annotate] [--format=FORMAT] [--as-numbered-lines=WHEN] [--remove-timestamps] [file...]
    filterdiff {[--help] [--version] [--list] [--grep ...]}
     

    DESCRIPTION

    You can use filterdiff to obtain a patch that applies to files matching the shell wildcard PATTERN from a larger collection of patches. For example, to see the patches in patch-2.4.3.gz that apply to all files called lp.c:

    filterdiff -z -i '*/lp.c' patch-2.4.3.gz
    

    If neither -i nor -x options are given, -i '*' is assumed. This way filterdiff can be used to clean up an existing diff file, removing redundant lines from the beginning (eg. the text from the mail body) or between the chunks (eg. in CVS diffs). To extract pure patch data, use a command like this:

    filterdiff message-with-diff-in-the-body > patch
    

    Note that the interpretation of the shell wildcard pattern does not count slash characters or periods as special (in other words, no flags are given to fnmatch). This is so that lq*/basenamerq-type patterns can be given without limiting the number of pathname components.

    You can use both unified and context format diffs with this program.  

    OPTIONS

    -i PATTERN
    Include only files matching PATTERN. All other lines in the input are suppressed.
    -x PATTERN
    Exclude files matching PATTERN. All other lines in the input are displayed.
    -p n
    When matching, ignore the first n components of the pathname.
    -# RANGE | --hunks=RANGE
    Only include hunks within the specified RANGE. Hunks are numbered from 1, and the range is a comma-separated list of numbers or lqfirst-lastrq spans; either the first or the last in the span may be omitted to indicate no limit in that direction.
    --lines=RANGE
    Only include hunks that contain lines from the original file that lie within the specified RANGE. Lines are numbered from 1, and the range is a comma-separated list of numbers or lqfirst-lastrq spans; either the first or the last in the span may be omitted to indicate no limit in that direction.
    --files=RANGE
    Only include files indicated by the specified RANGE. Files are numbered from 1 in the order they appear in the patch input, and the range is a comma-separated list of numbers or lqfirst-lastrq spans; either the first or the last in the span may be omitted to indicate no limit in that direction.
    --annotate
    Annotate each hunk with the filename and hunk number.
    --format=unified|context
    Use specified output format.
    --strip=n
    Remove the first n components of pathnames in the output.
    --addprefix=PREFIX
    Prefix pathnames in the output by PREFIX.
    --as-numbered-lines=before|after
    Instead of a patch fragment, display the lines of the selected hunks with the line number of the file before (or after) the patch is applied, followed by a TAB character and a colon, at the beginning of each line. Each hunk except the first will have a line consisting of lq...rq before it.
    --remove-timestamps
    Do not include file timestamps in the output.
    -v, --verbose
    Always show non-diff lines in the output. By default, non-diff lines are only shown when excluding a filename pattern.
    -z
    Decompress files with extensions .gz and .bz2.
    --help
    Display a short usage message.
    --version
    Display the version number of filterdiff.
    --list
    Behave like lsdiff(1) instead.
    --grep
    Behave like grepdiff(1) instead.
     

    EXAMPLES

    To see all patch hunks that affect the first five lines of a C file:

    filterdiff -i '*.c' --lines=-5 < patch
    

    To see the first hunk of each file patch, use:

    filterdiff -#1 patchfile
    

    To see patches modifying a ChangeLog file in a subdirectory, use:

    filterdiff -p1 Changelog
    

    To see the complete patches for each patch that modifies line 1 of the original file, use:

    filterdiff --lines=1 patchfile | lsdiff | \
      xargs -rn1 filterdiff patchfile -i
    

    To see all but the first hunk of a particular patch, you might use:

    filterdiff -p1 -i file.c -#2- foo-patch
    

    If you have a very specific list of hunks in a patch that you want to see, list them:

    filterdiff -#1,2,5-8,10,12,27-
    

    To see the lines of the files that would be patched as they will appear after the patch is applied, use:

    filterdiff --as-numbered-lines=after patch.file
    

    You can see the same context before the patch is applied with:

    filterdiff --as-numbered-lines=before
    patch.file
    

    Filterdiff can also be used to convert between unified and context format diffs:

    filterdiff -v --format=unified context.diff
    
     

    SEE ALSO

    lsdiff(1), grepdiff(1)  

    AUTHOR

    Tim Waugh <twaugh@redhat.com>.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    EXAMPLES
    SEE ALSO
    AUTHOR


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