sccs-comb(1) manual page
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sccs-comb, comb - combine SCCS deltas
/usr/ccs/bin/comb [ -os
] [ -csid-list ] [ -psid ] s.filename ...
SUNWsprot
comb generates a shell script (see sh(1)
) that you can use to reconstruct
the indicated s.files. This script is written to the standard output.
If a
directory name is used in place of the s.filename argument, the comb command
applies to all s.files in that directory. Unreadable s.files produce an error;
processing continues with the next file (if any). The use of ‘-’ as the s.filename
argument indicates that the names of files are to be read from the standard
input, one s.file per line.
If no options are specified, comb preserves only
the most recent (leaf) delta in a branch, and the minimal number of ancestors
needed to preserve the history.
- -o
- For each ‘get -e’ generated, access
the reconstructed file at the release of the delta to be created. Otherwise,
the reconstructed file is accessed at the most recent ancestor. The use
of -o may decrease the size of the reconstructed s.file. It may also alter
the shape of the delta tree of the original file.
- -s
- Generate scripts to
gather statistics, rather than combining deltas. When run, the shell scripts
report: the file name, size (in blocks) after combining, original size
(also in blocks), and the percentage size change, computed by the formula:
100 * ( original - combined ) /
original
- This option can be used to calculate
the space that will be saved,
- before actually doing the combining.
- -csid-list
- Include the indicated list of deltas. All other deltas are omitted. sid-list
is a comma-separated list of SCCS
delta ID
s (SID
s). To specify a range of
deltas, use a ‘-’ separator instead of a comma, between two SID
s in the list.
- -pSID
- The SID
of the oldest delta to be preserved.
- s.COMB
- reconstructed
SCCS
file
- comb?????
- temporary file
sccs(1)
, sccs-admin(1)
, sccs-cdc(1)
,
sccs-delta(1)
, sccs-help(1)
, sccs-prs(1)
, sccs-prt(1)
, sccs-rmdel(1)
, sccs-sccsdiff(1)
,
what(1)
, sccsfile(4)
Use the SCCS
help command for explanations
(see sccs-help(1)
).
comb may rearrange the shape of the tree of deltas.
It may not save any space; in fact, it is possible for the reconstructed
file to actually be larger than the original.
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