NAME

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

SYNOPSIS

[XSI] rmdel -r SID file...

DESCRIPTION

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 ) 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

OPTIONS

The rmdel utility shall conform to XBD 12.2 Utility Syntax Guidelines .

The following option shall be supported:

-r SID

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

OPERANDS

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.

STDIN

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.

INPUT FILES

The SCCS files shall be files of unspecified format.

ENVIRONMENT VARIABLES

The following environment variables shall affect the execution of rmdel:

LANG

Provide a default value for the internationalization variables that are unset or null. (See XBD 8.2 Internationalization Variables for the precedence of internationalization variables used to determine the values of locale categories.)

LC_ALL

If set to a non-empty string value, override the values of all the other internationalization variables.

LC_CTYPE

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).

LC_MESSAGES

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

NLSPATH

Determine the location of messages objects and message catalogs.

ASYNCHRONOUS EVENTS

Default.

STDOUT

Not used.

STDERR

The standard error shall be used only for diagnostic messages.

OUTPUT FILES

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

EXTENDED DESCRIPTION

None.

EXIT STATUS

The following exit values shall be returned:

 0

Successful completion.

>0

An error occurred.

CONSEQUENCES OF ERRORS

Default.

APPLICATION USAGE

None.

EXAMPLES

None.

RATIONALE

None.

FUTURE DIRECTIONS

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.

SEE ALSO

admin , delta , get , prs

XBD 8. Environment Variables , 12.2 Utility Syntax Guidelines

CHANGE HISTORY

First released in Issue 2.

Issue 6

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

Issue 8

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 .