b12211fe30
for more detailed information about sdiff(1). Hopefully this will make it easier to find how `interactive merging' works with sdiff. PR: docs/30618 Submitted by: mark@summersault.com
206 lines
3.9 KiB
Groff
206 lines
3.9 KiB
Groff
.\" $FreeBSD$
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.\"
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.TH SDIFF 1 "22sep1993" "GNU Tools" "GNU Tools"
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.SH NAME
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sdiff \- find differences between two files and merge interactively
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.SH SYNOPSIS
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.B sdiff
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.B -o
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outfile [options] from-file to-file
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.SH DESCRIPTION
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The
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.I sdiff
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command merges two files and interactively outputs the
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results to
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.IR outfile .
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If
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.I from-file
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is a directory and
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.I to-file
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is not,
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.I sdiff
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compares the file in
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.I from-file
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whose file name is that of
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.IR to-file ,
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and vice versa.
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.I from-file
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and
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.I to-file
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may not both be
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directories.
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.I sdiff
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options begin with
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.BR \- ,
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so normally
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.I from-file
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and
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.I to-file
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may not begin with
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.BR \- .
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However,
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.B \-\-
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as an
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argument by itself treats the remaining arguments as file names even if
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they begin with
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.BR \- .
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You may not use
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.B \-
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as an input file.
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.I sdiff
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without
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.B \-o
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(or
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.BR \-\-output )
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produces a
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side-by-side difference. This usage is obsolete; use
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.B "diff \-\-side\-by\-side"
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instead.
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.SS Options
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Below is a summary of all of the options that GNU
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.I sdiff
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accepts.
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Each option has two equivalent names, one of which is a single
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letter preceded by
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.BR \- ,
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and the other of which is a long name
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preceded by
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.BR \-\- .
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Multiple single letter options (unless they take
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an argument) can be combined into a single command line argument. Long
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named options can be abbreviated to any unique prefix of their name.
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.TP
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.B \-a
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Treat all files as text and compare them line-by-line, even if they
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do not appear to be text.
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.TP
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.B \-b
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Ignore changes in amount of white space.
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.TP
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.B \-B
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Ignore changes that just insert or delete blank lines.
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.TP
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.B \-d
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Change the algorithm to perhaps find a smaller set of changes. This
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makes
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.I sdiff
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slower (sometimes much slower).
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.TP
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.B \-H
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Use heuristics to speed handling of large files that have numerous
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scattered small changes.
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.TP
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.B \-\-expand\-tabs
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Expand tabs to spaces in the output, to preserve the alignment of tabs
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in the input files.
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.TP
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.B \-i
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Ignore changes in case; consider upper- and lower-case to be the same.
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.TP
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.BI "\-I " regexp
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Ignore changes that just insert or delete lines that match
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.IR regexp .
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.TP
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.B \-\-ignore\-all\-space
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Ignore white space when comparing lines.
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.TP
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.B \-\-ignore\-blank\-lines
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Ignore changes that just insert or delete blank lines.
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.TP
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.B \-\-ignore\-case
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Ignore changes in case; consider upper- and lower-case to be the same.
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.TP
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.BI \-\-ignore\-matching\-lines= regexp
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Ignore changes that just insert or delete lines that match
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.IR regexp .
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.TP
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.B \-\-ignore\-space\-change
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Ignore changes in amount of white space.
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.TP
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.B \-l
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.br
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.ns
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.TP
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.B \-\-left\-column
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Print only the left column of two common lines.
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.TP
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.B \-\-minimal
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Change the algorithm to perhaps find a smaller set of changes. This
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makes
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.I sdiff
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slower (sometimes much slower).
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.TP
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.BI "\-o " file
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.br
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.ns
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.TP
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.BI \-\-output= file
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Put merged output into
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.IR file .
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This option is required for merging.
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.TP
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.B \-s
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.br
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.ns
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.TP
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.B \-\-suppress\-common\-lines
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Do not print common lines.
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.TP
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.B \-\-speed\-large\-files
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Use heuristics to speed handling of large files that have numerous
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scattered small changes.
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.TP
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.B \-t
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Expand tabs to spaces in the output, to preserve the alignment of tabs
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in the input files.
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.TP
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.B \-\-text
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Treat all files as text and compare them line-by-line, even if they
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do not appear to be text.
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.TP
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.B \-v
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.br
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.ns
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.TP
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.B \-\-version
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Output the version number of
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.IR sdiff .
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.TP
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.BI "\-w " columns
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.br
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.ns
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.TP
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.BI \-\-width= columns
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Use an output width of
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.IR columns .
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Note that for historical reasons, this option is
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.B \-W
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in
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.IR diff ,
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.B \-w
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in
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.IR sdiff .
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.TP
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.B \-W
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Ignore horizontal white space when comparing lines.
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Note that for historical reasons, this option is
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.B \-w
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in
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.IR diff ,
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.B \-W
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in
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.IR sdiff .
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.SH SEE ALSO
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cmp(1), comm(1), diff(1), diff3(1).
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The
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.B info
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documentation of
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.BR diff .
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.SH DIAGNOSTICS
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An exit status of 0 means no differences were found, 1 means some
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differences were found, and 2 means trouble.
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