PROLOG | NAME | SYNOPSIS | DESCRIPTION | OPTIONS | OPERANDS | STDIN | INPUT FILES | ENVIRONMENT VARIABLES | ASYNCHRONOUS EVENTS | STDOUT | STDERR | OUTPUT FILES | EXTENDED DESCRIPTION | EXIT STATUS | CONSEQUENCES OF ERRORS | APPLICATION USAGE | EXAMPLES | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

UNGET(1P)                 POSIX Programmer's Manual                UNGET(1P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       unget — undo a previous get of an SCCS file (DEVELOPMENT)

SYNOPSIS         top

       unget [−ns] [−r SID] file...

DESCRIPTION         top

       The unget utility shall reverse the effect of a get −e done prior to
       creating the intended new delta.

OPTIONS         top

       The unget utility shall conform to the Base Definitions volume of
       POSIX.1‐2008, Section 12.2, Utility Syntax Guidelines.

       The following options shall be supported:

       −r SID    Uniquely identify which delta is no longer intended. (This
                 would have been specified by get as the new delta.) The use
                 of this option is necessary only if two or more outstanding
                 get commands for editing on the same SCCS file were done by
                 the same person (login name).

       −s        Suppress the writing to standard output of the intended
                 delta's SID.

       −n        Retain the file that was obtained by get, which would
                 normally be removed from the current directory.

OPERANDS         top

       The following operands shall be supported:

       file      A pathname of an existing SCCS file or a directory. If file
                 is a directory, the unget 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 shall be taken to be the name of an SCCS file to be
                 processed. Non-SCCS files and unreadable files shall be
                 silently ignored.

STDIN         top

       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         top

       Any SCCS files processed shall be files of an unspecified format.

ENVIRONMENT VARIABLES         top

       The following environment variables shall affect the execution of
       unget:

       LANG      Provide a default value for the internationalization
                 variables that are unset or null. (See the Base Definitions
                 volume of POSIX.1‐2008, Section 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 message catalogs for the
                 processing of LC_MESSAGES.

ASYNCHRONOUS EVENTS         top

       Default.

STDOUT         top

       The standard output shall consist of a line for each file, in the
       following format:

           "%s\n", <SID removed from file>

       If there is more than one named file or if a directory or standard
       input is named, each pathname shall be written before each of the
       preceding lines:

           "\n%s:\n", <pathname>

STDERR         top

       The standard error shall be used only for diagnostic messages.

OUTPUT FILES         top

       Any SCCS files updated shall be files of an unspecified format.
       During processing of a file, a locking z-file, as described in get,
       and a q-file (a working copy of the p-file), may be created and
       deleted. The p-file and g-file, as described in get, shall be
       deleted.

EXTENDED DESCRIPTION         top

       None.

EXIT STATUS         top

       The following exit values shall be returned:

        0    Successful completion.

       >0    An error occurred.

CONSEQUENCES OF ERRORS         top

       Default.

       The following sections are informative.

APPLICATION USAGE         top

       None.

EXAMPLES         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       delta(1p), get(1p), sact(1p)

       The Base Definitions volume of POSIX.1‐2008, Chapter 8, Environment
       Variables, Section 12.2, Utility Syntax Guidelines

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version and
       the original IEEE and The Open Group Standard, the original IEEE and
       The Open Group Standard is the referee document. The original
       Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2013                           UNGET(1P)

Pages that refer to this page: sact(1p)sccs(1p)