comb(1)comb(1)Namecomb - combine delta versions of SCCS file
Syntaxcomb [-o] [-s] [-psid] [-clist] files
The command generates a shell procedure which, when run, will recon‐
struct the given SCCS files. For further information, see The recon‐
structed files are generally smaller than the original files. The
arguments may be specified in any order, but all keyletter arguments
apply to all named SCCS files. If a directory is named, behaves as
though each file in the directory were specified as a named file,
except non-SCCS files (last component of the path name does not begin
with s.) and unreadable files, which are silently ignored. If a name
of - is given, the standard input is read; each line of the standard
input is taken to be the name of an SCCS file to be processed.
The generated shell procedure is written on the standard output.
Each keyletter argument is explained as though only one named file is
to be processed, but the effects of any keyletter argument apply inde‐
pendently to each named file.
Options-clist Preserves specified deltas. See for the syntax of a list.
All other deltas are discarded.
-o 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. Use of the -o
keyletter may decrease the size of the reconstructed SCCS
file. It may also alter the shape of the delta tree of the
-pSID Indicates oldest delta to be preserved. All older deltas are
discarded in the reconstructed file.
-s Generates a shell procedure which produces a report. This
report gives the file name, size (in blocks) after combining,
original size (also in blocks), and percentage change com‐
100 ∗ (original - combined) / original
It is recommended that before any SCCS files are actually
combined, one should use this option to determine exactly how
much space is saved by the combining process.
If no keyletter arguments are specified, will preserve only leaf deltas
and the minimal number of ancestors needed to preserve the tree.
The command 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.
See for explanations.
s.COMB The name of the reconstructed SCCS file.
See Alsoadmin(1), delta(1), get(1), help(1), prs(1), sccs(1), sccsfile(5)
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