cdc - change the delta commentary of an SCCS delta
cdc -rSID [-m[mrlist]] [-y[comment]] files
cdc changes the delta commentary, for the SID (SCCS IDentification
string) specified by the -r keyletter, of each named SCCS file.
Delta commentary is defined to be the Modification Request (MR) and
comment information normally specified via the delta(1) command (-m and
If a directory is named, cdc behaves as though each file in the directory
were specified as a named file, except that non-SCCS files (last
component of the pathname does not begin with s.) and unreadable files
are silently ignored. If a name of - is given, the standard input is
read (see WARNINGS) and each line of the standard input is taken to be
the name of an SCCS file to be processed.
Arguments to cdc, which may appear in any order, consist of keyletter
arguments and filenames.
All the described keyletter arguments apply independently to each named
-rSID Used to specify the SCCS IDentification (SID) string
of a delta for which the delta commentary is to be
-mmrlist If the SCCS file has the v flag set (see admin(1)]
then a list of MR numbers to be added and/or deleted
in the delta commentary of the SID specified by the
-r keyletter may be supplied. A null MR list has no
MR entries are added to the list of MRs in the same
manner as that of delta(1). In order to delete an
MR, precede the MR number with the character ! (see
EXAMPLES). If the MR to be deleted is currently in
the list of MRs, it is removed and changed into a
``comment'' line. A list of all deleted MRs is
placed in the comment section of the delta commentary
and preceded by a comment line stating that they were
If -m is not used and the standard input is a
terminal, the prompt MRs? is issued on the standard
output before the standard input is read; if the
standard input is not a terminal, no prompt is
issued. The MRs? prompt always precedes the
comments? prompt (see -y keyletter).
MRs in a list are separated by blanks and/or tab
characters. An unescaped new-line character
terminates the MR list.
Note that if the v flag has a value (see admin(1)),
it is taken to be the name of a program (or shell
procedure) which validates the correctness of the MR
numbers. If a non-zero exit status is returned from
the MR number validation program, cdc terminates and
the delta commentary remains unchanged.
-y[comment] Arbitrary text used to replace the comment(s) already
existing for the delta specified by the -r keyletter.
The previous comments are kept and preceded by a
comment line stating that they were changed. A null
comment has no effect.
If -y is not specified and the standard input is a
terminal, the prompt comments? is issued on the
standard output before the standard input is read; if
the standard input is not a terminal, no prompt is
issued. An unescaped new-line character terminates
the comment text.
Simply stated, the keyletter arguments are either (1) if you made the
delta, you can change its delta commentary; or (2) if you own the file
and directory you can modify the delta commentary.
cdc -r1.6 -m"bl78-12345 !bl77-54321 bl79-00001" -ytrouble s.file
adds bl78-12345 and bl79-00001 to the MR list, removes bl77-54321 from
the MR list, and adds the comment trouble to delta 1.6 of s.file.
cdc -r1.6 s.file
MRs? !bl77-54321 bl78-12345 bl79-00001
does the same thing.
If SCCS filenames are supplied to the cdc command via the standard input
(- on the command line), then the -m and -y keyletters must also be used.
x-file (see delta(1))
z-file (see delta(1))
admin(1), delta(1), get(1), help(1), prs(1), sccsfile(4).
Use help(1) for explanations.
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