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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 |
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PRS(1P) POSIX Programmer's Manual PRS(1P)
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.
prs — print an SCCS file (DEVELOPMENT)
prs [-a] [-d dataspec] [-r[SID]] file...
prs [-e|-l] -c cutoff [-d dataspec] file...
prs [-e|-l] -r[SID] [-d dataspec] file...
The prs utility shall write to standard output parts or all of an
SCCS file in a user-supplied format.
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 7502
is equivalent to -c 750228235959.
-a Request writing of information for both removed—that
is, delta type=R (see rmdel(1p))—and existing—that is,
delta type=D,—deltas. If the -a option is not
specified, information for existing deltas only shall
be provided.
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 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.
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.
Any SCCS files displayed are files of an unspecified format.
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.
Default.
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 │ " │ D or R │ 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.
The standard error shall be used only for diagnostic messages.
None.
None.
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
Default.
The following sections are informative.
None.
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 D type. The only option
allowed to be used with this special case is the -a option.
None.
None.
admin(1p), delta(1p), get(1p), what(1p)
The Base Definitions volume of POSIX.1‐2017, Chapter 8,
Environment Variables, Section 12.2, Utility Syntax Guidelines
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(1P)
Pages that refer to this page: admin(1p), delta(1p), get(1p), rmdel(1p), sccs(1p), val(1p)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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