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

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

SYNOPSIS
       unget [-ns][-r SID] file...

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

OPTIONS
       The unget utility shall conform  to  the  Base  Definitions  volume  of
       IEEE Std 1003.1-2001, 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
       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
       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
       Any SCCS files processed shall be files of an unspecified format.

ENVIRONMENT VARIABLES
       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
              IEEE Std 1003.1-2001,  Section  8.2,  Internationalization Vari-
              ables 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
       Default.

STDOUT
       The  standard output shall consist of a line for each file, in the fol-
       lowing 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 pre-
       ceding lines:

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

STDERR
       The standard error shall be used only for diagnostic messages.

OUTPUT FILES
       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
       None.

EXIT STATUS
       The following exit values shall be returned:

        0     Successful completion.

       >0     An error occurred.

CONSEQUENCES OF ERRORS
       Default.

       The following sections are informative.

APPLICATION USAGE
       None.

EXAMPLES
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       delta , get , sact

COPYRIGHT
       Portions  of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
       Electrical  and  Electronics  Engineers, Inc and The Open Group. 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.opengroup.org/unix/online.html .

IEEE/The Open Group                  2003                             UNGET(P)

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