RMDEL(1) General Commands Manual RMDEL(1)

rmdel — remove a delta from an SCCS file (DEVELOPMENT)


rmdel -r SID file...

The rmdel utility shall remove the delta specified by the SID from each named SCCS file. The delta to be removed shall be the most recent delta in its branch in the delta chain of each named SCCS file. In addition, the application shall ensure that the SID specified is not that of a version being edited for the purpose of making a delta; that is, if a p-file (see get(1)) exists for the named SCCS file, the SID specified shall not appear in any entry of the p-file.

Removal of a delta shall be restricted to:

  1. The user who made the delta
  2. The owner of the SCCS file
  3. The owner of the directory containing the SCCS file

The rmdel utility shall conform to XBD V1_chap12(7).

The following option shall be supported:

Specify the SCCS identification string ( SID ) of the delta to be deleted.

The following operand shall be supported:

file
A pathname of an existing SCCS file or a directory. If file is a directory, the rmdel utility shall behave 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 shall be silently ignored.

If exactly one file operand appears, and it is ‘-’, the standard input shall be read; each line of the standard input is taken to be the name of an SCCS file to be processed. Non-SCCS files and unreadable files shall be silently ignored.

The standard input shall be a text file used only when the file operand is specified as ‘-’. Each line of the text file shall be interpreted as an SCCS pathname.

The SCCS files shall be files of unspecified format.

The following environment variables shall affect the execution of rmdel:

Provide a default value for the internationalization variables that are unset or null. (See XBD for the precedence of internationalization variables used to determine the values of locale categories.)
If set to a non-empty string value, override the values of all the other internationalization variables.
Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multi-byte characters in arguments and input files).

Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard error.
Determine the location of messages objects and message catalogs.

Default.

Not used.

The standard error shall be used only for diagnostic messages.

The SCCS files shall be files of unspecified format. During processing of a file, a temporary , as described in admin(1), may be created and deleted; a locking , as described in get(1), may be created and deleted.

None.

The following exit values shall be returned:

Successful completion.
An error occurred.

Default.

None.

None.

None.

If this utility is directed to create a new directory entry that contains any bytes that have the encoded value of a <newline> character, implementations are encouraged to treat this as an error. A future version of this standard may require implementations to treat this as an error.

admin(1), delta(1), get(1), prs(1)

XBD V1_chap08(7), V1_chap12(7)

First released in Issue 2.

The normative text is reworded to avoid use of the term "must" for application requirements.

Austin Group Defect 251 is applied, encouraging implementations to disallow the creation of filenames containing any bytes that have the encoded value of a <newline> character.

Austin Group Defect 1122 is applied, changing the description of NLSPATH .

June 14, 2024 posix.fail