comb(1)                        DG/UX 5.4R3.00                        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.

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




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

comb(1)                        DG/UX 5.4R3.00                        comb(1)


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

DIAGNOSTICS
       Use help(1) for explanations.

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

NOTES
       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.











































Licensed material--property of copyright holder(s)                         2