PRS(1)                     POSIX Programmer's Manual                    PRS(1)



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

NAME
       prs -- print an SCCS file (DEVELOPMENT)

SYNOPSIS
       prs [[-a]] [[-d dataspec]] [[-r[[SID]]]] file...

       prs [[-e|-l]] -c cutoff [[-d dataspec]] file...

       prs [[-e|-l]] -r[[SID]] [[-d dataspec]] file...

DESCRIPTION
       The prs utility shall write to standard output parts or all of an SCCS
       file in a user-supplied format.

OPTIONS
       The prs utility shall conform to the Base Definitions volume of
       POSIX.1-2017, Section 12.2, Utility Syntax Guidelines, except that the
       -r option has an optional option-argument. This optional option-
       argument cannot be presented as a separate argument. The following
       options shall be supported:

       -d dataspec
                 Specify the output data specification. The dataspec shall be
                 a string consisting of SCCS file data keywords (see Data
                 Keywords) interspersed with optional user-supplied text.

       -r[SID]]   Specify the SCCS identification string (SID) of a delta for
                 which information is desired. If no SID option-argument is
                 specified, the SID of the most recently created delta shall
                 be assumed.

       -e        Request information for all deltas created earlier than and
                 including the delta designated via the -r option or the date-
                 time given by the -c option.

       -l        Request information for all deltas created later than and
                 including the delta designated via the -r option or the date-
                 time given by the -c option.

       -c cutoff Indicate the cutoff date-time, in the form:


                     YY[[MM[[DD[[HH[[MM[[SS]]]]]]]]]]

                 For the YY component, values in the range [69,99] shall refer
                 to years 1969 to 1999 inclusive, and values in the range
                 [00,68] shall refer to years 2000 to 2068 inclusive.

                 Note:     It is expected that in a future version of this
                           standard the default century inferred from a
                           2-digit year will change. (This would apply to all
                           commands accepting a 2-digit year as input.)

                 No changes (deltas) to the SCCS file that were created after
                 the specified cutoff date-time shall be included in the
                 output. Units omitted from the date-time default to their
                 maximum possible values; for example, -c 77550022 is equivalent
                 to -c 775500222288223355995599.

       -a        Request writing of information for both removed--that is,
                 delta type=_R (see rmdel)--and existing--that is, delta
                 type=_D,--deltas. If the -a option is not specified,
                 information for existing deltas only shall be provided.

OPERANDS
       The following operand shall be supported:

       file      A pathname of an existing SCCS file or a directory. If file
                 is a directory, the prs 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 ss..)  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 displayed are files of an unspecified format.

ENVIRONMENT VARIABLES
       The following environment variables shall affect the execution of prs:

       LANG      Provide a default value for the internationalization
                 variables that are unset or null. (See the Base Definitions
                 volume of POSIX.1-2017, Section 8.2, Internationalization
                 Variables 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 be a text file whose format is dependent on
       the data keywords specified with the -d option.

   Data Keywords
       Data keywords specify which parts of an SCCS file shall be retrieved
       and output. All parts of an SCCS file have an associated data keyword.
       A data keyword may appear in a dataspec multiple times.

       The information written by prs shall consist of:

        1. The user-supplied text

        2. Appropriate values (extracted from the SCCS file) substituted for
           the recognized data keywords in the order of appearance in the
           dataspec

       The format of a data keyword value shall either be simple ('S'), in
       which keyword substitution is direct, or multi-line ('M').

       User-supplied text shall be any text other than recognized data
       keywords. A <tab> shall be specified by '\t' and <newline> by '\n'.
       When the -r option is not specified, the default dataspec shall be:


           :PN::\n\n

       and the following dataspec shall be used for each selected delta:


           :Dt:\t:DL:\nMRs:\n:MR:COMMENTS:\n:C:

+-------------------------------------------------------------------------------------+
|                              SCCS File Data Keywords                                |
+--------+--------------------------------+--------------+-------------------+--------+
|Keyword |           Data Item            | File Section |       Value       | Format |
+--------+--------------------------------+--------------+-------------------+--------+
|:Dt:    | Delta information              | Delta Table  | See below*        |   S    |
|:DL:    | Delta line statistics          |      "       | :Li:/:Ld:/:Lu:    |   S    |
|:Li:    | Lines inserted by Delta        |      "       | nnnnn***          |   S    |
|:Ld:    | Lines deleted by Delta         |      "       | nnnnn***          |   S    |
|:Lu:    | Lines unchanged by Delta       |      "       | nnnnn***          |   S    |
|:DT:    | Delta type                     |      "       | DD or RR            |   S    |
|:I:     | SCCS ID string (SID)           |      "       | See below**       |   S    |
|:R:     | Release number                 |      "       | nnnn              |   S    |
|:L:     | Level number                   |      "       | nnnn              |   S    |
|:B:     | Branch number                  |      "       | nnnn              |   S    |
|:S:     | Sequence number                |      "       | nnnn              |   S    |
|:D:     | Date delta created             |      "       | :Dy:/:Dm:/:Dd:    |   S    |
|:Dy:    | Year delta created             |      "       | nn                |   S    |
|:Dm:    | Month delta created            |      "       | nn                |   S    |
|:Dd:    | Day delta created              |      "       | nn                |   S    |
|:T:     | Time delta created             |      "       | :Th:::Tm:::Ts:    |   S    |
|:Th:    | Hour delta created             |      "       | nn                |   S    |
|:Tm:    | Minutes delta created          |      "       | nn                |   S    |
|:Ts:    | Seconds delta created          |      "       | nn                |   S    |
|:P:     | Programmer who created Delta   |      "       | logname           |   S    |
|:DS:    | Delta sequence number          |      "       | nnnn              |   S    |
|:DP:    | Predecessor Delta sequence     |      "       | nnnn              |   S    |
|        | number                         |              |                   |        |
|:DI:    | Sequence number of deltas      |      "       | :Dn:/:Dx:/:Dg:    |   S    |
|        | included, excluded, or ignored |              |                   |        |
|:Dn:    | Deltas included (sequence #)   |      "       | :DS: :DS: ......     |   S    |
|:Dx:    | Deltas excluded (sequence #)   |      "       | :DS: :DS: ......     |   S    |
|:Dg:    | Deltas ignored (sequence #)    |      "       | :DS: :DS: ......     |   S    |
|:MR:    | MR numbers for delta           |      "       | text              |   M    |
|:C:     | Comments for delta             |      "       | text              |   M    |
|:UN:    | User names                     |  User Names  | text              |   M    |
|:FL:    | Flag list                      |    Flags     | text              |   M    |
|:Y:     | Module type flag               |      "       | text              |   S    |
|:MF:    | MR validation flag             |      "       | yes or no         |   S    |
|:MP:    | MR validation program name     |      "       | text              |   S    |
|:KF:    | Keyword error, warning flag    |      "       | yes or no         |   S    |
|:KV:    | Keyword validation string      |      "       | text              |   S    |
|:BF:    | Branch flag                    |      "       | yes or no         |   S    |
|:J:     | Joint edit flag                |      "       | yes or no         |   S    |
|:LK:    | Locked releases                |      "       | :R: ......           |   S    |
|:Q:     | User-defined keyword           |      "       | text              |   S    |
|:M:     | Module name                    |      "       | text              |   S    |
|:FB:    | Floor boundary                 |      "       | :R:               |   S    |
|:CB:    | Ceiling boundary               |      "       | :R:               |   S    |
|:Ds:    | Default SID                    |      "       | :I:               |   S    |
|:ND:    | Null delta flag                |      "       | yes or no         |   S    |
|:FD:    | File descriptive text          |   Comments   | text              |   M    |
|:BD:    | Body                           |     Body     | text              |   M    |
|:GB:    | Gotten body                    |      "       | text              |   M    |
|:W:     | A form of what string          |     N/A      | :Z::M:\t:I:       |   S    |
|:A:     | A form of what string          |     N/A      | :Z::Y: :M: :I::Z: |   S    |
|:Z:     | what string delimiter          |     N/A      | @(#)              |   S    |
|:F:     | SCCS filename                  |     N/A      | text              |   S    |
|:PN:    | SCCS file pathname             |     N/A      | text              |   S    |
+--------+--------------------------------+--------------+-------------------+--------+
       *     :Dt:=:DT: :I: :D: :T: :P: :DS: :DP:

       **    :R:.:L:.:B:.:S: if the delta is a branch delta (:BF:=yes)
             :R:.:L: if the delta is not a branch delta (:BF:=no)

       ***   The line statistics are capped at 99999. For example, if 100000
             lines were unchanged in a certain revision, :Lu: shall produce
             the value 99999.

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

OUTPUT FILES
       None.

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
        1. The following example:


               prs -d "User Names for :F: are:\n:UN:" s.file

           might write to standard output:


               User Names for s.file are:
               xyz
               131
               abc

        2. The following example:


               prs -d "Delta for pgm :M:: :I: - :D: By :P:" -r s.file

           might write to standard output:


               Delta for pgm main.c: 3.7 - 77/12/01 By cas

        3. As a special case:


               prs s.file

           might write to standard output:


               s.file:
               <blank line>
               D 1.1 77/12/01 00:00:00 cas 1 000000/00000/00000
               MRs:
               bl78-12345
               bl79-54321
               COMMENTS:
               this is the comment line for s.file initial delta
               <blank line>

           for each delta table entry of the DD type. The only option allowed
           to be used with this special case is the -a option.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       admin, delta, get, what

       The Base Definitions volume of POSIX.1-2017, Chapter _8, Environment
       Variables, Section 12.2, Utility Syntax Guidelines

COPYRIGHT
       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                               PRS(1)
