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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 differ (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 Vari-
ables 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).
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 .
PATH Determine the location of name, as described in the Base Defini-
tions 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, 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, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications 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 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 .
IEEE/The Open Group 2003 TYPE(1P)
