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Linux 2.6 - man page for type (linux section 1)

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

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 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 Definitions volume of IEEE Std 1003.1-2001, Chapter 8, Environment Vari- ables.
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 Technol- ogy -- 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(P)