# cdiff(1)

    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).