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#top diff


diff - find differences between two files

Powiązane:
comm, diff, patch,

SYNOPSIS
diff [options] from-file to-file
diff3 [options] mine older yours
sdiff -o outfile [options] from-file to-file


DESCRIPTION



OPTIONS
-lines
Show lines (an integer) lines of context. This option does not specify an output format by itself; it has no effect unless it is combined with -c or -u. This option is obsolete. For proper operation, patch typically needs at least two lines of context.

-a
Treat all files as text and compare them line-by-line, even if they do not seem to be text.

-b
Ignore changes in amount of white space.

-B
Ignore changes that just insert or delete blank lines.

--brief
Report only whether the files differ, not the details of the differences.

-c
Use the context output format.

-C lines
--context[=lines]
Use the context output format, showing lines (an integer) lines of context, or three if lines is not given. For proper opera- tion, patch typically needs at least two lines of context.

--changed-group-format=format
Use format to output a line group containing differing lines from both files in if-then-else format.

-d
Change the algorithm to perhaps find a smaller set of changes. This makes diff slower (sometimes much slower).

-D name
Make merged if-then-else format output, conditional on the pre- processor macro name.

-e
--ed
Make output that is a valid ed script.

--exclude=pattern
When comparing directories, ignore files and subdirectories whose basenames match pattern.

--exclude-from=file
When comparing directories, ignore files and subdirectories whose basenames match any pattern contained in file.

--expand-tabs
Expand tabs to spaces in the output, to preserve the alignment of tabs in the input files.

-f
Make output that looks vaguely like an ed script but has changes in the order they appear in the file.

-F regexp
In context and unified format, for each hunk of differences, show some of the last preceding line that matches regexp.

--forward-ed
Make output that looks vaguely like an ed script but has changes in the order they appear in the file.

-h
This option currently has no effect; it is present for Unix com- patibility.

-H
Use heuristics to speed handling of large files that have numer- ous scattered small changes.

--horizon-lines=lines
Do not discard the last lines lines of the common prefix and the first lines lines of the common suffix.

-i
Ignore changes in case; consider upper- and lower-case letters equivalent.

-I regexp
Ignore changes that just insert or delete lines that match regexp.

--ifdef=name
Make merged if-then-else format output, conditional on the preprocessor macro name.

--ignore-all-space
Ignore white space when comparing lines.

--ignore-blank-lines
Ignore changes that just insert or delete blank lines.

--ignore-case
Ignore changes in case; consider upper- and lower-case to be the same.

--ignore-matching-lines=regexp
Ignore changes that just insert or delete lines that match regexp.

--ignore-space-change
Ignore changes in amount of white space.

--initial-tab
Output a tab rather than a space before the text of a line in normal or context format. This causes the alignment of tabs in the line to look normal.

-l
Pass the output through pr to paginate it.

-L label
--label=label
Use label instead of the file name in the context format and unified format headers.

--left-column
Print only the left column of two common lines in side by side format.

--line-format=format
Use format to output all input lines in in-then-else format.

--minimal
Change the algorithm to perhaps find a smaller set of changes. This makes diff slower (sometimes much slower).

-n
Output RCS-format diffs; like -f except that each command specifies the number of lines affected.

-N
--new-file
In directory comparison, if a file is found in only one directory, treat it as present but empty in the other directory.

--new-group-format=format
Use format to output a group of lines taken from just the second file in if-then-else format.

--new-line-format=format
Use format to output a line taken from just the second file in if-then-else format.

--old-group-format=format
Use format to output a group of lines taken from just the first file in if-then-else format.

--old-line-format=format
Use format to output a line taken from just the first file in if-then-else format.

-p
Show which C function each change is in.

-P
When comparing directories, if a file appears only in the second directory of the two, treat it as present but empty in the other.

--paginate
Pass the output through pr to paginate it.

-q
Report only whether the files differ, not the details of the differences.

-r
When comparing directories, recursively compare any subdirectories found.

--rcs
Output RCS-format diffs; like -f except that each command specifies the number of lines affected.

--recursive
When comparing directories, recursively compare any subdirectories found.

--report-identical-files
-s
Report when two files are the same.

-S file
When comparing directories, start with the file file. This is used for resuming an aborted comparison.

--from-file=file
Compare file to all operands. file can be a directory.

--to-file=file
Compare all operands to file. file can be a directory.

--sdiff-merge-assist
Print extra information to help sdiff. sdiff uses this option when it runs diff. This option is not intended for users to use directly.

--show-c-function
Show which C function each change is in.

--show-function-line=regexp
In context and unified format, for each hunk of differences, show some of the last preceding line that matches regexp.

--side-by-side
Use the side by side output format.

--speed-large-files
Use heuristics to speed handling of large files that have numerous scattered small changes.

--starting-file=file
When comparing directories, start with the file file. This is used for resuming an aborted comparison.

--suppress-common-lines
Do not print common lines in side by side format.

-t
Expand tabs to spaces in the output, to preserve the alignment of tabs in the input files.

-T
Output a tab rather than a space before the text of a line in normal or context format. This causes the alignment of tabs in the line to look normal.

--text Treat
all files as text and compare them line-by-line, even if they do not appear to be text.

-u
Use the unified output format.

--unchanged-group-format=format
Use format to output a group of common lines taken from both files in if-then-else format.

--unchanged-line-format=format
Use format to output a line common to both files in if-then-else format.

--unidirectional-new-file
When comparing directories, if a file appears only in the second directory of the two, treat it as present but empty in the other.

-U lines
--unified[=lines]
Use the unified output format, showing lines (an integer) lines of context, or three if lines is not given. For proper opera- tion, patch typically needs at least two lines of context.

-v
--version
Output the version number of diff.

-w
Ignore white space when comparing lines.

-W columns
</divindent50>
--width=columns
<divindent50>
Use an output width of columns in side by side format.

-x pattern
When comparing directories, ignore files and subdirectories whose basenames match pattern.

-X file
When comparing directories, ignore files and subdirectories whose basenames match any pattern contained in file.

-y
Use the side by side output format.



EXAMPLES
diff - porównaj pliki (generowanie pliku różnic)
sdiff - porównaj pliki na konsoli
diff3 - porównaj 3 pliki

generate diff for patch
diff -Naur /path1 /path2

alternative syntax for input
diff <(sort file1) <(sort file2)
# do not use spaces: bad syntax: bash: syntax error near unexpected token '('
diff < (sort file1) < (sort file2)

cat file1a | sort  > file1
cat file2a | sort  > file2
diff file1 file2



Zmodyfikowany ostatnio: 2014/06/23 23:40:32 (10 lat temu), textsize: 12,2 kB, htmlsize: 14,3 kB
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