COMB(1) DOMAIN/IX Reference Manual (SYS5) COMB(1)
NAME
comb - combine SCCS deltas
USAGE
comb [ -o ] [ -s ] [ pSID ] [ -clist ] files
DESCRIPTION
Comb generates a Shell procedure that reconstructs the given
SCCS files. The reconstructed files are usually smaller than
the original files. The arguments may be specified in any
order, but options apply to all named SCCS files. If a
directory is named, comb behaves as though each file in the
directory is specified as a named file, except that it
silently ignores non-SCCS and unreadable files.
If you supply a dash (-) in place of a filename, comb reads
the standard input. It takes each line of the input to be
the name of an SCCS file to be processed, silently ignoring
non-SCCS and unreadable files. Comb writes the generated
Shell procedure on the standard output.
The valid options are described below. 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. If no options are specified, comb preserves only leaf
deltas and the minimal number of ancestors needed to
preserve the tree.
OPTIONS
-clist Specify a list of deltas to be preserved. See get
(1) for the syntax of a list.
-o Access the reconstructed file at the release of
the delta to be created. This activity occurs for
each -e generated. By default, the reconstructed
file is accessed at the most recent ancestor.
Using this option may decrease the size of the
reconstructed SCCS file and alter the shape of the
delta tree of the original file.
-pSID Specify the SCCS Identification string (SID) of
the oldest delta to be preserved. Discard all
older deltas in the reconstructed file.
-s Generate a Shell procedure which, when run, pro-
duces a report on each file. This report will
contain: the filename, size (in blocks) after com-
bining, original size (in blocks), and percentage
change computed by the following:
100 * (original - combined) / original
Printed 6/10/85 COMB-1
COMB(1) DOMAIN/IX Reference Manual (SYS5) COMB(1)
Use this option before any SCCS files are actually
combined, to determine how much space is saved by
the combining process.
CAUTIONS
Comb may rearrange the shape of the tree of deltas. It may
not save any space; in fact, the reconstructed file may
actually be larger than the original.
FILES
s.COMB reconstructed SCCS file
comb????? temporary
DIAGNOSTICS
Use help (1) for explanations.
RELATED INFORMATION
admin (1), delta (1), get (1), help (1), prs (1), sh (1),
sccsfile (4).
COMB-2 Printed 6/10/85