sdiff(1)                                                 sdiff(1)



     NAME
          sdiff - side-by-side difference program

     SYNOPSIS
          sdiff [-l] [-o output] [-s] [-w n] file1 file2

     DESCRIPTION
          sdiff uses the output of diff(1) to produce a side-by-side
          listing of two files indicating those lines that are dif-
          ferent.  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.

          The following flag options exist:

          -w n       Use the next argument, n, as the width of the
                     output line.  The default line length is 130
                     characters.  The width must be between 20 and
                     200.

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




     April, 1990                                                     1

     sdiff(1)                                                 sdiff(1)



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

     EXAMPLES
          If file1 contains:

             x
             a
             b
             c
             d

          and file2 contains:

             y
             a
             d
             c

          then

             sdiff file1 file2

          would print:

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


     FILES
          /usr/bin/sdiff

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

















     2                                                     April, 1990