delta man page on Ultrix

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delta(1)							      delta(1)

Name
       delta - create new SCCS delta to save changes

Syntax
       delta [-rSID] [-s] [-n] [-glist] [-m[mrlist]] [-y[comment]] [-p] files

Description
       The  command  is used to permanently introduce into the named SCCS file
       changes that were made to the file retrieved by (called the g-file,  or
       generated file).

       The  command  makes a delta to each named SCCS file.  If a directory is
       named, behaves as though 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 RESTRICTIONS);
       each line of the standard input is taken to be the name of an SCCS file
       to be processed.

       The  command  may  issue	 prompts on the standard output depending upon
       certain keyletters specified and flags that may be present in the  SCCS
       file.  For further information, see -m and -y keyletters below and

       The  includes  commentary,  input  by the user, that consists of one or
       more lines, terminated by a period (.) in column one of a new line.

       Keyletter arguments apply independently to each named file.

Options
       Keyletter arguments:

       -glist		   Ignores specified list of deltas.

       -m[mrlist]	   Indicates   the   modification   request    number.
			   (-m[mrlist]).

			   If  -m is not used and the standard input is a ter‐
			   minal, 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 com‐
			   ments?  prompt (see -y keyletter).

			   MRs in a list are separated by  blanks  and/or  tab
			   characters.	An unescaped new-line character termi‐
			   nates 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
			   will validate the correctness of  the  MR  numbers.
			   For	further	 information,  see  If a non-zero exit
			   status is returned from MR number  validation  pro‐
			   gram, terminates (it is assumed that the MR numbers
			   were not all valid).

       -n		   Does not delete edited file.

       -p		   Displays differences	 before	 and  after  delta  is
			   applied.

       -rSID		   Identifies  which  delta  is to be made to the SCCS
			   file.  Use this keyletter only if two or more  out‐
			   standing gets for editing (get -e) on the same SCCS
			   file has been done by the same person (login name).
			   The	SID  value specified with the -r keyletter can
			   be either the SID specified on the command line  or
			   the SID to be made as reported by the command.  For
			   further information, see A  diagnostic  results  if
			   the	specified  SID	is ambiguous, or, if necessary
			   and omitted on the command line.

       -s		   Suppresses all messages.

       -y[comment]	   Creates delta with specified	 commentary.   text  A
			   null string is considered a valid comment.
			   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.  A period (.) in column one of a newline
			   terminates the comment text.

Restrictions
       Lines beginning with an SOH ASCII  character  (binary  001)  cannot  be
       placed  in the SCCS file unless the SOH is escaped.  This character has
       special meaning to SCCS and will cause an error.	 For further  informa‐
       tion, see

       A  of  many SCCS files, followed by a of those files, should be avoided
       when the generates a large amount of data.  Instead, multiple sequences
       should be used.

       If  the standard input (-) is specified on the command line, the -m (if
       necessary) and -y keyletters must also be present.  Omission  of	 these
       keyletters causes an error to occur.

Diagnostics
       See for explanations.

Files
       g-file		   Existed  before the execution of removed after com‐
			   pletion of

       p-file		   Existed before the execution of  delta;  may	 exist
			   after completion of

       q-file		   Created  during the execution of removed after com‐
			   pletion of

       x-file		   Created during the execution	 of  renamed  to  SCCS
			   file after completion of

       z-file		   Created  during the execution of removed during the
			   execution of

       d-file		   Created during the execution of removed after  com‐
			   pletion of

       /usr/bin/bdiff	   Program  to	compute differences between the ``got‐
			   ten'' file and the g-file.

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

								      delta(1)
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