asa(1p) — Linux manual page

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

ASA(1P)                 POSIX Programmer's Manual                ASA(1P)

PROLOG         top

       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.

NAME         top

       asa — interpret carriage-control characters

SYNOPSIS         top

       asa [file...]

DESCRIPTION         top

       The asa utility shall write its input files to standard output,
       mapping carriage-control characters from the text files to line-
       printer control sequences in an implementation-defined manner.

       The first character of every line shall be removed from the
       input, and the following actions are performed.

       If the character removed is:

       <space>   The rest of the line is output without change.

       0         A <newline> is output, then the rest of the input line.

       1         One or more implementation-defined characters that
                 causes an advance to the next page shall be output,
                 followed by the rest of the input line.

       +         The <newline> of the previous line shall be replaced
                 with one or more implementation-defined characters that
                 causes printing to return to column position 1,
                 followed by the rest of the input line. If the '+' is
                 the first character in the input, it shall be
                 equivalent to <space>.

       The action of the asa utility is unspecified upon encountering
       any character other than those listed above as the first
       character in a line.

OPTIONS         top

       None.

OPERANDS         top

       file      A pathname of a text file used for input. If no file
                 operands are specified, the standard input shall be
                 used.

STDIN         top

       The standard input shall be used if no file operands are
       specified, and shall be used if a file operand is '-' and the
       implementation treats the '-' as meaning standard input.
       Otherwise, the standard input shall not be used.  See the INPUT
       FILES section.

INPUT FILES         top

       The input files shall be text files.

ENVIRONMENT VARIABLES         top

       The following environment variables shall affect the execution of
       asa:

       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 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         top

       Default.

STDOUT         top

       The standard output shall be the text from the input file
       modified as described in the DESCRIPTION section.

STDERR         top

       None.

OUTPUT FILES         top

       None.

EXTENDED DESCRIPTION         top

       None.

EXIT STATUS         top

       The following exit values shall be returned:

        0    All input files were output successfully.

       >0    An error occurred.

CONSEQUENCES OF ERRORS         top

       Default.

       The following sections are informative.

APPLICATION USAGE         top

       None.

EXAMPLES         top

        1. The following command:

               asa file

           permits the viewing of file (created by a program using
           FORTRAN-style carriage-control characters) on a terminal.

        2. The following command:

               a.out | asa | lp

           formats the FORTRAN output of a.out and directs it to the
           printer.

RATIONALE         top

       The asa utility is needed to map ``standard'' FORTRAN 77 output
       into a form acceptable to contemporary printers. Usually, asa is
       used to pipe data to the lp utility; see lp.

       This utility is generally used only by FORTRAN programs. The
       standard developers decided to retain asa to avoid breaking the
       historical large base of FORTRAN applications that put carriage-
       control characters in their output files. There is no requirement
       that a system have a FORTRAN compiler in order to run
       applications that need asa.

       Historical implementations have used an ASCII <form-feed> in
       response to a 1 and an ASCII <carriage-return> in response to a
       '+'.  It is suggested that implementations treat characters other
       than 0, 1, and '+' as <space> in the absence of any compelling
       reason to do otherwise. However, the action is listed here as
       ``unspecified'', permitting an implementation to provide
       extensions to access fast multiple-line slewing and channel
       seeking in a non-portable manner.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       fort77(1p), lp(1p)

       The Base Definitions volume of POSIX.1‐2017, Chapter 8,
       Environment Variables

COPYRIGHT         top

       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                           ASA(1P)

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