Section: POSIX Programmer's Manual (0P)
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.
--- word-expansion types
header shall define the structures and symbolic constants used by the
header shall define the
structure type, which shall include at least the following members:
size_t we_wordc Count of words matched by words.
char **we_wordv Pointer to list of expanded words.
size_t we_offs Slots to reserve at the beginning of we_wordv.
header shall define the following symbolic constants for use as flags
Append words to those previously generated.
Number of null pointers to prepend to
Fail if command substitution is requested.
argument was passed to a previous successful call to
and has not been passed to
The result is the same as if the application had called
and then called
Do not redirect
Report error on an attempt to expand an undefined shell variable.
header shall define the following symbolic constants as error
One of the unquoted characters---<newline>,
in an inappropriate context.
Reference to undefined shell variable when WRDE_UNDEF is set in
Command substitution requested when WRDE_NOCMD was set in
Attempt to allocate memory failed.
Shell syntax error, such as unbalanced parentheses or unterminated string.
header shall define the
type as described in
The following shall be declared as functions and may also be defined as
macros. Function prototypes shall be provided.
int wordexp(const char *restrict, wordexp_t *restrict, int);
void wordfree(wordexp_t *);
The following sections are informative.
The System Interfaces volume of POSIX.1-2008,
Section 2.6, Word Expansions
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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
Any typographical or formatting errors that appear
in this page are most likely
to have been introduced during the conversion of the source files to
man page format. To report such errors, see