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.1‐2008, 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.1‐2008, Chapter 8, Environment
       Variables

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) 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.unix.org/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                 2013                             ASA(1P)