cdc - Changes the comments in a Source Code Control System (SCCS) delta
cdc -rSID [-m] [MRlist] [-y] [comment] file...
cdc -rSID -mMRlist -ycomment -
The cdc command changes the Modification Requests (MRs) and comments for
the SID specified by the -r option for each named Source Code Control Sys-
tem (SCCS) file.
Supplies a list of MR numbers for cdc to add or delete in the SID
specified by the -r option. You can use this option only if the file
has the v header flag set (see the admin command). A null MR list has
In MRlist, MRs are separated by spaces, tab characters, or both. To
delete an MR, precede the MR number with an ! (exclamation point). If
the MR you want to delete is currently in the list of MRs, it is
changed into a comment line. The cdc command places a list of all
deleted MRs in the comment section of the delta and precedes them with
a comment line, indicating that the following MRs were deleted.
If you do not specify the -m option, and the v header flag is set, MRs
are read from standard input. If standard input is a terminal, the cdc
command prompts you for the MRs. The first newline character not pre-
ceded by a \ (backslash) ends the list on the command line. The cdc
command continues to take input until it reads an End-of-File character
or a blank line. MRs are always read before comments (see the -y
option). If the v flag has a value, cdc interprets the value as the
name of a program that validates the MR numbers. If the MR number
validation program returns a nonzero exit value, the cdc command stops
and does not change the MRs.
Specifies the SCCS identification number of the delta for which cdc
will change the comments or MRs.
Specifies text to replace any comment already existing for the delta
specified by the -r option. The cdc command keeps the existing com-
ments and precedes them by a comment line, stating that they were
changed. A null comment has no effect.
If you do not specify -y, the cdc command reads comments from standard
input until it reads an End-of-File character. If the standard input
is a terminal, the cdc command prompts for the comments and also allows
a blank line to end input. If the last character of a line is a \
(backslash), the cdc command ignores it and continues to read standard
If cdc reads standard input for file names (that is, when you specify a
file name of - (dash)), you must use the -y and -m options.
If you specify a directory name, cdc performs the requested actions on all
SCCS files in that directory (that is, all files with names that have the
s. prefix). If you specify a - (dash) in place of file, cdc reads standard
input and interprets each line as the name of an SCCS file. For more infor-
mation on SCCS, see the Programming Support Tools.
You can change the comments and MRs for an SID only if you made the SID or
you own the file and the directory. For more information on the permis-
sions needed to change SCCS files, see the get command.
For information about exit values, see the OPTIONS section.
To change the comment for SID 1.3 of SCCS file s.test.c to new comment,
cdc -r1.3 -y"new comment" s.test.c
Commands: admin(1), comb(1), delta(1), get(1), prs(1), rmdel(1), sact(1),
sccs(1), sccsdiff(1), sccshelp(1), unget(1), val(1), what(1)
Programming Support Tools