16.1 Options to sdiff
Below is a summary of all of the options that GNU
sdiff accepts. Each option has two equivalent names, one of
which is a single letter preceded by ‘-’, and the other of which
is a long name preceded by ‘--’. Multiple single letter options
(unless they take an argument) can be combined into a single command
line argument. Long named options can be abbreviated to any unique
prefix of their name.
- Treat all files as text and compare them line-by-line, even if they
do not appear to be text. See Binary.
- Ignore changes in amount of white space. See White Space.
- Ignore changes that just insert or delete blank lines. See Blank Lines.
- Change the algorithm to perhaps find a smaller set of changes. This
makes sdiff slower (sometimes much slower). See diff Performance.
- Use the compatible comparison program program to compare files
instead of diff.
- Ignore changes due to tab expansion.
See White Space.
- Output a summary of usage and then exit.
- Ignore changes in case; consider upper- and lower-case to be the same.
See Case Folding.
- -I regexp
- Ignore changes that just insert or delete lines that match regexp.
See Specified Lines.
- Print only the left column of two common lines.
See Side by Side Format.
- -o file
- Put merged output into file. This option is required for merging.
- Do not print common lines. See Side by Side Format.
- Use heuristics to speed handling of large files that have numerous
scattered small changes. See diff Performance.
- Strip any trailing carriage return at the end of an input line.
- Expand tabs to spaces in the output, to preserve the alignment of tabs
in the input files. See Tabs.
- Assume that tab stops are set every columns (default 8) print
columns. See Tabs.
- Output version information and then exit.
- -w columns
- Output at most columns (default 130) print columns per line.
See Side by Side Format. Note that for historical reasons, this
option is -W in diff, -w in sdiff.
- Ignore white space when comparing lines. See White Space.
Note that for historical reasons, this option is -w in diff,
-W in sdiff.
- Ignore white space at line end. See White Space.