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rfcdiff - Man Page

rfcdiff [options] file1 file2

rfcdiff takes two RFCs or Internet-Drafts in text form as input, and produces output which indicates the differences found in one of various forms, controlled by the options listed below. In all cases, page headers and page footers are stripped before looking for changes.


Produce side-by-side .html diff (default)


Produce changebar marked .txt output


Produce a regular diff output


Produce paged wdiff output


Produce html-wrapped coloured wdiff output

--oldcolour COLOURNAME

Colour for new file in hwdiff (default is "green")

--oldcolor COLORNAME

Color for old file in hwdiff (default is "red")

--newcolour COLOURNAME

Colour for new file in hwdiff (default is "green")

--newcolor COLORNAME

Color for new file in hwdiff (default is "green")


Make difference text in hwdiff slightly larger


Show html output in browser


Don't delete temporary workfiles


Show version


Show this help

--info "Synopsis|Usage|Copyright|Description|Log" Show various info

--width N

Set a maximum width of N characters for the display of each half of the old/new html diff


Show linenumbers for each line, not only at the start of each change section


Strip document preamble (title, boilerplate and table of contents) and postamble (Intellectual Property Statement, Disclaimer etc)


Don't strip headers and footers (or body)


Before/After diff, suitable for rfc-editor --abdiff


Send output to stdout instead to a file

--context LINES Provide a different number of lines of context, by default 10


26 January 2024