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cdc(1)									cdc(1)

Name
       cdc - change delta commentary of an SCCS file

Syntax
       cdc -rSID [-m[mrlist]]  [-y[comment]] files

Description
       The  command  changes the delta commentary of each named SCCS file, for
       the SID specified by the -r option.

       The delta commentary is defined to be the Modification Request (MR) and
       comment	information  usually  specified	 by  the  command  (-m	and -y
       options).

       The commentary may consist of one or more lines, terminated by a dot in
       column one of a new line.

       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  (see  RESTRICTIONS).  Each line of the standard input is taken to
       be the name of an SCCS file to be processed.

       Arguments to which may appear in any order,  consist  of	 option	 argu‐
       ments, and file names.

       All  the	 described  option arguments apply independently to each named
       file.

Options
       -m[mrlist]     Adds or deletes modification numbers.  If the SCCS  file
		      has the v flag set then a list of MR numbers to be added
		      and/or deleted in the delta commentary of the SID speci‐
		      fied  by	the  -r	 option	 may be supplied.  For further
		      information, see A null MR list has no effect.

		      MR entries are added to the list of MRs in the same man‐
		      ner  as that of 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 is preceded by a comment line stat‐
		      ing 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 charac‐
		      ters.  An unescaped new-line character terminates the MR
		      list.

		      Note  that  if  the v flag has a value it is taken to be
		      the name of a program (or shell procedure)  which	 vali‐
		      dates  the  correctness  of the MR numbers.  For further
		      information, see If a nonzero exit  status  is  returned
		      from  the	 MR  number validation program, terminates and
		      the delta commentary remains unchanged.

       -rSID	      Specifies the SCCS Identification string of a delta  for
		      which the delta commentary is to be changed.

       -y[comment]    Replaces	existing commentary for the delta specified by
		      the -r option.  The previous comments are kept and  pre‐
		      ceded  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  ter‐
		      minal,  the  prompt  comments? is issued on the standard
		      output before the standard input is read; if  the	 stan‐
		      dard  input  is  not a terminal, no prompt is issued.  A
		      dot in column one of a new line terminates  the  comment
		      text.

       Certain	permissions  are necessary to modify the SCCS file; generally,
       however, if you made the delta, you can change  its  delta  commentary,
       and  if you own the file and directory you can modify the delta commen‐
       tary.

Examples
       This example shows how to 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.
       sccscdc -r1.6 -m"bl78-12345 !bl77-54321 bl79-00001" -ytrouble .file

       This example does the same thing.
       sccscdc -r1.6 .file

       -MRs? !bl77-54321 bl78-12345 bl79-00001

       comments? trouble

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

Diagnostics
       See for explanations.

Files
       For more information, see

       For more information, see

See Also
       admin(1), delta(1), get(1), help(1), prs(1), sccs(1), sccsfile(5)
       Guide to the Source Code Control System

									cdc(1)
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