User Commands                                       sccs-unget(1)


NAME

     sccs-unget, unget - undo a previous get of an SCCS file


SYNOPSIS

     /usr/ccs/bin/unget [-ns] [-q[nsedelim]] [-rsid] s.filename...


DESCRIPTION

     The unget utility undoes the effect of a get -e command exe-
     cuted before the creation of the pending delta.

     If a directory name is used in place of the s.filename argu-
     ment,  the  unget  command  applies  to  all s.files in that
     directory. Unreadable s.files produce an  error;  processing
     continues with the next file (if any). The use of `-' as the
     s.filename argument indicates that the names of files are to
     be read from the standard input, one s.file per line.


OPTIONS

     The following options are supported:

     -n     Retains the retrieved  version,  which  is  otherwise
            removed.

     -s     Suppress display of the SCCS delta ID (SID).

     -rsid  When multiple versions are checked out,  this  option
            specifies  which pending delta to abort. A diagnostic
            results if the specified SID is ambiguous, or  if  it
            is necessary but omitted from the command line.

     -q[nsedelim]
            Enable NSE mode.  If NSE mode is enabled, several NSE
            related extensions may be used.  In this release, the
            value of nsedelim is ignored.

            This option is an  undocumented  SUN  extension  that
            does not exist in historic sccs implementations.

     -V     Prints the unget version number string and exists.


ENVIRONMENT VARIABLES

     See environ(5) for descriptions of the following environment
     variables  that  affect  the  execution  of unget(1):  LANG,

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User Commands                                       sccs-unget(1)

     LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.

     SCCS_NO_HELP
          If set, unget(1) will not  automatically  call  help(1)
          with the SCCS error code in order to print a more help-
          ful error message. Scripts that  depend  on  the  exact
          error messages of SCCS commands should set the environ-
          ment variable SCCS_NO_HELP and set LC_ALL=C.


EXIT STATUS

     The following exit values are returned:

     0    Successful completion.

     1    An error occurred.


FILES

     p.file
          permissions (lock) file for checked-out versions.   See
          sccs-get(1)  for  a  description  of  the layout of the
          p.file.

     q.file
          temporary copy of the p.file;  renamed  to  the  p.file
          after completion

     z.file
          temporary lock file contains the binary process  id  in
          host byte order followed by the host name

     dump.core
          If the file dump.core exists in the  current  directory
          and a fatal signal is received, a coredump is initiated
          via abort(3).


ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

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User Commands                                       sccs-unget(1)

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWsprot                   |
    |_____________________________|_____________________________|
    | Interface Stability         | Standard                    |
    |_____________________________|_____________________________|


SEE ALSO

     sccs(1),    sccs-admin(1),    sccs-cdc(1),     sccs-comb(1),
     sccs-cvt(1),   sccs-delta(1),   sccs-get(1),   sccs-help(1),
     sccs-log(1),   sccs-prs(1),   sccs-prt(1),    sccs-rmdel(1),
     sccs-sact(1),   sccs-sccsdiff(1),   sccs-val(1),   bdiff(1),
     diff(1),     what(1),     sccschangeset(4),     sccsfile(4),
     attributes(5), environ(5), standards(5).


DIAGNOSTICS

     Use the  SCCS  help  command  for  explanations  (see  sccs-
     help(1)).


AUTHORS

     The SCCS suite was origininally written by Marc J.  Rochkind
     at  Bell Labs in 1972.  Release 4.0 of SCCS, introducing new
     versions of  the  programs  admin(1),  get(1),  prt(1),  and
     delta(1)  was  published on February 18, 1977; it introduced
     the new text based SCCS v4  history  file  format  (previous
     SCCS  releases used a binary history file format).  The SCCS
     suite was later maintained by various people at AT&T and Sun
     Microsystems.   Since  2006, the SCCS suite is maintained by
     Joerg Schilling.

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