comb(1)                    DG/UX 4.30                     comb(1)



     NAME
          comb - combine SCCS deltas

     SYNOPSIS
          comb [-o] [-s] [-psid] [-clist] files

     DESCRIPTION
          Comb generates a shell procedure (see sh(1)) that
          reconstructs the given SCCS files.  The reconstructed files
          will usually be smaller than the original files.  The
          arguments may be specified in any order, but all options
          apply to all named SCCS files.  If a directory is named,
          comb behaves as though each file in the directory were
          specified as a named file, except that non-SCCS files (last
          component of the path name does not begin with s.)  and
          unreadable files are silently ignored.  If a name of - is
          given, the standard input is read; each line of the input is
          taken to be the name of an SCCS file to be processed; non-
          SCCS files and unreadable files are silently ignored.  The
          generated shell procedure is written on the standard output.

          The options are as follows.  Each is explained as though
          only one named file is to be processed, but the effects of
          any option apply independently to each named file.

          -pSID   The SCCS IDentification string (SID) of the oldest
                  delta to be preserved.  All older deltas are
                  discarded in the reconstructed file.

          -clist  A list (see get(1) for the syntax of a list) of
                  deltas to be preserved.  All other deltas are
                  discarded.

          -o      For each get -e generated, this argument causes the
                  reconstructed file to be accessed at the release of
                  the delta to be created.  Otherwise, the
                  reconstructed file would be accessed at the most
                  recent ancestor.  Using the -o option may decrease
                  the size of the reconstructed SCCS file.  It may
                  also alter the shape of the delta tree of the
                  original file.

          -s      This argument makes comb generate a shell procedure
                  that produces a report giving, for each file:  the
                  file name, size (in blocks) after combining,
                  original size (also in blocks), and percentage
                  change computed by:
                         100 * (original - combined) / original
                  You should use this option before any SCCS files are
                  actually combined, to determine how much space is
                  saved by the combining process.




     Licensed material--property of copyright holder(s)         Page 1

     comb(1)                    DG/UX 4.30                     comb(1)



          If you supply no options, comb will preserve only leaf
          deltas and the minimal number of ancestors needed to
          preserve the tree.

     FILES
          s.COMB        The name of the reconstructed SCCS file.
          comb?????     Temporary.

     SEE ALSO
          admin(1), delta(1), get(1), help(1), prs(1), sh(1),
          sccsfile(4).

     DIAGNOSTICS
          Use help(1) for explanations.

     BUGS
          Comb may rearrange the shape of the tree of deltas.  It may
          not save any space; in fact, the reconstructed file can be
          larger than the original.




































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