NAME

     cdiff - context diff


SYNOPSIS

     cdiff [-cn] oldfile newfile


OPTIONS

     -c   Provide n lines of context


EXAMPLES

     cdiff old new >f    # Write context diff on f

     cdiff -c1 old new >f
                         # Use only 1 line of context


DESCRIPTION

     Cdiff produces a context diff by first running diff and then
     adding  context.  Some  update programs, like patch, can use
     context diffs to update  files,  even  in  the  presence  of
     other, independent changes.


SEE ALSO

     cmp(1), diff(1), patch(1).