1TYPE(1P) POSIX Programmer's Manual TYPE(1P)
2
6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
12 type — write a description of command type
13
15 type name...
16
18 The type utility shall indicate how each argument would be interpreted
19 if used as a command name.
20
22 None.
23
25 The following operand shall be supported:
26 name A name to be interpreted.
28
30 Not used.
31
33 None.
34
36 The following environment variables shall affect the execution of type:
37 LANG Provide a default value for the internationalization vari‐
39 ables that are unset or null. (See the Base Definitions vol‐
40 ume of POSIX.1‐2017, Section 8.2, Internationalization Vari‐
41 ables for the precedence of internationalization variables
42 used to determine the values of locale categories.)
43 LC_ALL If set to a non-empty string value, override the values of
45 all the other internationalization variables.
46 LC_CTYPE Determine the locale for the interpretation of sequences of
48 bytes of text data as characters (for example, single-byte as
49 opposed to multi-byte characters in arguments).
50 LC_MESSAGES
52 Determine the locale that should be used to affect the format
53 and contents of diagnostic messages written to standard
54 error.
55 NLSPATH Determine the location of message catalogs for the processing
57 of LC_MESSAGES.
58 PATH Determine the location of name, as described in the Base Def‐
60 initions volume of POSIX.1‐2017, Chapter 8, Environment Vari‐
61 ables.
62
64 Default.
65
67 The standard output of type contains information about each operand in
68 an unspecified format. The information provided typically identifies
69 the operand as a shell built-in, function, alias, or keyword, and where
70 applicable, may display the operand's pathname.
71
73 The standard error shall be used only for diagnostic messages.
74
76 None.
77
79 None.
80
82 The following exit values shall be returned:
83 0 Successful completion.
85 >0 An error occurred.
87
89 Default.
90 The following sections are informative.
92
94 Since type must be aware of the contents of the current shell execution
95 environment (such as the lists of commands, functions, and built-ins
96 processed by hash), it is always provided as a shell regular built-in.
97 If it is called in a separate utility execution environment, such as
98 one of the following:
99 nohup type writer
102 find . -type f | xargs type
103 it might not produce accurate results.
105
107 None.
108
110 None.
111
113 None.
114
116 command, hash
117 The Base Definitions volume of POSIX.1‐2017, Chapter 8, Environment
119 Variables
120
122 Portions of this text are reprinted and reproduced in electronic form
123 from IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
124 table Operating System Interface (POSIX), The Open Group Base Specifi‐
125 cations Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of
126 Electrical and Electronics Engineers, Inc and The Open Group. In the
127 event of any discrepancy between this version and the original IEEE and
128 The Open Group Standard, the original IEEE and The Open Group Standard
129 is the referee document. The original Standard can be obtained online
130 at http://www.opengroup.org/unix/online.html .
131 Any typographical or formatting errors that appear in this page are
133 most likely to have been introduced during the conversion of the source
134 files to man page format. To report such errors, see https://www.ker‐
135 nel.org/doc/man-pages/reporting_bugs.html .
136IEEE/The Open Group 2017 TYPE(1P)