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



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

NAME
       type - write a description of command type

SYNOPSIS
       type name...

DESCRIPTION
       The type utility shall indicate how each argument would be interpreted if used as a command name.

OPTIONS
       None.

OPERANDS
       The following operand shall be supported:

       name   A name to be interpreted.


STDIN
       Not used.

INPUT FILES
       None.

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

       LANG   Provide  a  default  value  for the internationalization variables that are unset or null. (See the Base
              Definitions volume of IEEE Std 1003.1-2001, Section 8.2, Internationalization Variables for  the  prece-
              dence 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  exam-
              ple, single-byte as opposed to multi-byte characters in arguments).

       LC_MESSAGES
              Determine  the locale that should be used to affect the format and contents of diagnostic messages writ-
              ten to standard error.

       NLSPATH
              Determine the location of message catalogs for the processing of LC_MESSAGES .

       PATH   Determine the location of name, as described in the Base  Definitions  volume  of  IEEE Std 1003.1-2001,
              Chapter 8, Environment Variables.


ASYNCHRONOUS EVENTS
       Default.

STDOUT
       The  standard  output of type contains information about each operand in an unspecified format. The information
       provided typically identifies the operand as a shell built-in, function, alias, or keyword, and where  applica-
       ble, may display the operand's pathname.

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
       Since  type must be aware of the contents of the current shell execution environment (such as the lists of com-
       mands, functions, and built-ins processed by hash), it is always provided as a shell regular built-in. If it is
       called in a separate utility execution environment, such as one of the following:


              nohup type writer
              find . -type f | xargs type
       it might not produce accurate results.

EXAMPLES
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       command, hash

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  Issue  6,  Copyright (C) 2001-2003 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 Stan-
       dard,  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 .



IEEE/The Open Group                  2003                             TYPE(1P)