This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface

       None.

       Default.

       Default.

       Thefollowingsectionsareinformative.

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard
       for Information  Technology  --  Portable  Operating  System  Interface  (POSIX),  The  Open  Group  Base
       Specifications  Issue  7, 2018 Edition, Copyright (C) 2018 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 .

       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                                   2017                                          SACT(1POSIX)

       The  sact utility shall inform the user of any impending deltas to a named SCCS file by writing a list to
       standard output. This situation occurs when get-e has been  executed  previously  without  a  subsequent
       execution of delta, unget, or sccsunedit.

       The following environment variables shall affect the execution of sact:

       LANG      Provide a default value for the internationalization variables that are unset or null. (See the
                 Base Definitions volume of POSIX.1‐2017, Section8.2, InternationalizationVariables  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.

       None.

       The following exit values shall be returned:

        0    Successful completion.

       >0    An error occurred.

       None.

       None.

       Any SCCS files interrogated are files of an unspecified format.

       sact — print current SCCS file-editing activity (DEVELOPMENT)

       The following operand shall be supported:

       file      A  pathname  of  an existing SCCS file or a directory. If file is a directory, the sact 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.

       None.

       None.

       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.

       None.

delta, get, sccs, unget

       The Base Definitions volume of POSIX.1‐2017, Chapter8, EnvironmentVariables

       The  standard  error  shall  be used only for optional informative messages concerning SCCS files with no
       impending deltas, and for diagnostic messages.

       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 output for each named file shall consist of a line in the following format:

           "%s %s %s %s %s\n", <SID>, <newSID>, <login>, <date>, <time>

       <SID>     Specifies  the  SID of a delta that currently exists in the SCCS file to which changes are made
                 to make the new delta.

       <newSID> Specifies the SID for the new delta to be created.

       <login>   Contains the login name of the user who makes the delta  (that  is,  who  executed  a  get  for
                 editing).

       <date>    Contains the date that get-e was executed, in the format used by the prs:D: data keyword.

       <time>    Contains the time that get-e was executed, in the format used by the prs:T: data keyword.

       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>

       sact file...