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 differ (con-
       sult 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 precedence  of  international-
              ization 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).

       LC_MESSAGES
              Determine the locale that should be used to affect the format and contents of diagnostic messages written to stan-
              dard 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 applicable, 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 commands, func-
       tions, 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,  Standard  for
       Information  Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copy-
       right (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 Standard, the original IEEE and The Open Group
       Standard  is  the  referee   document.   The   original   Standard   can   be   obtained   online   at   http://www.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                      TYPE(1P)