SDIFF(1)             INTERACTIVE UNIX System             SDIFF(1)



          NAME
               sdiff - side-by-side difference program

          SYNOPSIS
               sdiff [ options ... ] file1 file2

          DESCRIPTION
               The sdiff command uses the output of diff(1) to produce a
               side-by-side listing of two files indicating those lines
               that are different.  Each line of the two files is printed
               with a blank gutter between them if the lines are identical,
               a < in the gutter if the line only exists in file1, a > in
               the gutter if the line only exists in file2, and a | for
               lines that are different.

               For example:

                               x    |    y
                               a         a
                               b    <
                               c    <
                               d         d
                                    >    c

               The following options exist:

               -w n       Use the next argument, n, as the width of the
                          output line.  The default line length is 130
                          characters.

               -l         Only print the left side of any lines that are
                          identical.

               -s         Do not print identical lines.

               -o output  Use the next argument, output, as the name of a
                          third file that is created as a user-controlled
                          merging of file1 and file2.  Identical lines of
                          file1 and file2 are copied to output.  Sets of
                          differences, as produced by diff(1), are printed,
                          where a set of differences share a common gutter
                          character.  After printing each set of differ-
                          ences, sdiff prompts the user with a % and waits
                          for one of the following user-typed commands:

                          l    append the left column to the output file
                          r    append the right column to the output file
                          s    turn on silent mode; do not print identical
                               lines
                          v    turn off silent mode
                          e  l call the editor with the left column
                          e  r call the editor with the right column
                          e  b call the editor with the concatenation of


          Rev. Editing Package                                       Page 1

          SDIFF(1)             INTERACTIVE UNIX System             SDIFF(1)



                               left and right
                          e    call the editor with a zero length file
                          q    exit from the program

                          On exit from the editor, the resulting file is
                          concatenated on the end of the output file.

          SEE ALSO
               diff(1), ed(1).














































          Rev. Editing Package                                       Page 2