GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Debian 6.0.8(Squeeze) |
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diff(1) |
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diff − compare files line by line
diff [OPTION]... FILES
Compare files
line by line.
−i −−ignore−case
Ignore case differences in file contents.
−−ignore−file−name−case
Ignore case when comparing file names.
−−no−ignore−file−name−case
Consider case when comparing file names.
−E −−ignore−tab−expansion
Ignore changes due to tab expansion.
−b −−ignore−space−change
Ignore changes in the amount of white space.
−w −−ignore−all−space
Ignore all white space.
−B −−ignore−blank−lines
Ignore changes whose lines are all blank.
−I RE −−ignore−matching−lines=RE
Ignore changes whose lines all match RE.
−−strip−trailing−cr
Strip trailing carriage return on input.
−a −−text
Treat all files as text.
−c −C NUM −−context[=NUM]
Output NUM (default 3) lines of copied context.
−u −U NUM −−unified[=NUM]
Output NUM (default 3) lines of unified context.
−−label LABEL
Use LABEL instead of file name.
−p −−show−c−function
Show which C function each change is in.
−F RE −−show−function−line=RE
Show the most recent line matching RE.
−q −−brief
Output only whether files differ.
−e −−ed
Output an ed script.
−−normal
Output a normal diff.
−n −−rcs
Output an RCS format diff.
−y −−side−by−side
Output in two columns.
−W NUM −−width=NUM
Output at most NUM (default 130) print columns.
−−left−column
Output only the left column of common lines.
−−suppress−common−lines
Do not output common lines.
−D NAME −−ifdef=NAME
Output merged file to show ’#ifdef NAME’ diffs.
−−GTYPE−group−format=GFMT
Similar, but format GTYPE input groups with GFMT.
−−line−format=LFMT
Similar, but format all input lines with LFMT.
−−LTYPE−line−format=LFMT
Similar, but format LTYPE input lines with LFMT.
LTYPE is ’old’, ’new’, or ’unchanged’.
GTYPE is LTYPE or ’changed’.
GFMT may contain:
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%< |
lines from FILE1 |
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%> |
lines from FILE2 |
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%= |
lines common to FILE1 and FILE2 |
%[−][WIDTH][.[PREC]]{doxX}LETTER
printf−style spec for LETTER
LETTERs are as follows for new group, lower case for old group:
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F |
first line number |
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L |
last line number |
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N |
number of lines = L−F+1 |
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E |
F−1 |
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M |
L+1 |
LFMT may contain:
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%L |
contents of line |
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%l |
contents of line, excluding any trailing newline |
%[−][WIDTH][.[PREC]]{doxX}n
printf−style spec for input line number
Either GFMT or LFMT may contain:
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%% |
% |
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%c’C’ |
the single character C |
%c’\OOO’
the character with octal code OOO
−l −−paginate
Pass the output through ’pr’ to paginate it.
−t −−expand−tabs
Expand tabs to spaces in output.
−T −−initial−tab
Make tabs line up by prepending a tab.
−−tabsize=NUM
Tab stops are every NUM (default 8) print columns.
−−suppress−blank−empty
Suppress space or tab before empty output lines.
−r −−recursive
Recursively compare any subdirectories found.
−N −−new−file
Treat absent files as empty.
−−unidirectional−new−file
Treat absent first files as empty.
−s −−report−identical−files
Report when two files are the same.
−x PAT −−exclude=PAT
Exclude files that match PAT.
−X FILE −−exclude−from=FILE
Exclude files that match any pattern in FILE.
−S FILE −−starting−file=FILE
Start with FILE when comparing directories.
−−from−file=FILE1
Compare FILE1 to all operands. FILE1 can be a directory.
−−to−file=FILE2
Compare all operands to FILE2. FILE2 can be a directory.
−−horizon−lines=NUM
Keep NUM lines of the common prefix and suffix.
−d −−minimal
Try hard to find a smaller set of changes.
−−speed−large−files
Assume large files and many scattered small changes.
−v −−version
Output version info.
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−−help |
Output this help. |
FILES are ’FILE1 FILE2’ or ’DIR1 DIR2’ or ’DIR FILE...’ or ’FILE... DIR’. If −−from−file or −−to−file is given, there are no restrictions on FILES. If a FILE is ’−’, read standard input. Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.
Written by Paul Eggert, Mike Haertel, David Hayes, Richard Stallman, and Len Tower.
Report bugs to: bug−diffutils@gnu.org GNU diffutils home page: <http://www.gnu.org/software/diffutils/> General help using GNU software: <http://www.gnu.org/gethelp/>
Copyright
© 2010 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and
redistribute it. There is NO WARRANTY, to the extent
permitted by law.
The full documentation for diff is maintained as a Texinfo manual. If the info and diff programs are properly installed at your site, the command
info diff
should give you access to the complete manual.
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diff(1) | |