Jump to content United States-English
HP.com Home Products and Services Support and Drivers Solutions How to Buy
» Contact HP
More options
HP.com home
HP-UX Reference > C


HP-UX 11i Version 3: February 2007

Technical documentation

» Feedback
Content starts here

 » Table of Contents

 » Index


cdc — change the delta commentary of an SCCS delta


cdc -r SID [-m [mrlist]] [-y [comment]] files


The cdc command changes the delta commentary, for the SID specified by the -r option, 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 -y options).

If a directory is named, cdc behaves as if each file in the directory were specified as a named file, except that non-SCCS files (last component of the path name does not begin with s.) and unreadable files are silently ignored. If a name of - is given, the standard input is read (see WARNINGS); each line of the standard input is taken to be the name of an SCCS file to be processed.


Arguments to cdc, which can appear in any order, consist of option arguments and file names.

All of the described option arguments apply independently to each named file:


Used to specify the SCCS IDentification (SID) string of a delta for which the delta commentary is to be changed.


If the SCCS file has the v option set (see admin(1)), a list of MR numbers to be added and/or deleted in the delta commentary of the SID specified by the -r option may be supplied. A null MR list has no effect.

MR entries are added to the list of MRs in the same manner as that of delta(1). 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 deleted.

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 option).

MRs in a list are separated by blanks and/or tab characters. An unescaped new-line character terminates the MRs list.

Note that if the v option has a value (see admin(1)), it is treated as the name of a program (or shell procedure) that 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.


Arbitrary text used to replace the comment or comments already existing for the delta specified by the -r option. 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 standard input is read; if standard input is not a terminal, no prompt is issued. An unescaped new-line character terminates the comment text.

The exact permissions necessary to modify the SCCS file are documented in get(1). Simply stated, they are either:

  • If you made the delta, you can change its delta commentary, or

  • If you own the file and directory, you can modify the delta commentary.


Environment Variables

LANG determines the language in which messages are displayed.

International Code Set Support

Single- and multi-byte character code sets are supported.


Use sccshelp(1) for explanations.


Add bl78-12345 and bl79-00001 to the MR list, remove bl77-54321 from the MR list, and add the comment trouble to delta 1.6 of s.file:

cdc -r1.6 -m"bl78-12345 !bl77-54321 bl79-00001" -ytrouble s.file

The following does the same thing:

cdc -r1.6 s.file MRs? !bl77-54321 bl78-12345 bl79-00001 comments? trouble


If SCCS file names are supplied to the cdc command via the standard input (- on the command line), the -m and -y options must also be used.



See delta(1).


See delta(1).

Printable version
Privacy statement Using this site means you accept its terms Feedback to webmaster
© 1983-2007 Hewlett-Packard Development Company, L.P.