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grp.h(0P)		   POSIX Programmer's Manual		     grp.h(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.

       grp.h — group structure

       #include <grp.h>

       The <grp.h> header shall	 declare  the  group  structure,  which	 shall
       include the following members:

	   char	  *gr_name The name of the group.
	   gid_t   gr_gid  Numerical group ID.
	   char	 **gr_mem  Pointer to a null-terminated array of character
			   pointers to member names.

       The <grp.h> header shall define the gid_t and size_t types as described
       in <sys/types.h>.

       The following shall be declared as functions and may also be defined as
       macros. Function prototypes shall be provided.

	   void		  endgrent(void);
	   struct group	 *getgrent(void);
	   struct group	 *getgrgid(gid_t);
	   int		  getgrgid_r(gid_t, struct group *, char *,
			      size_t, struct group **);
	   struct group	 *getgrnam(const char *);
	   int		  getgrnam_r(const char *, struct group *, char *,
			      size_t , struct group **);
	   void		  setgrent(void);

       The following sections are informative.





       The  System  Interfaces volume of POSIX.1‐2008, endgrent(), getgrgid(),

       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 Electri‐
       cal 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 https://www.ker‐ .

IEEE/The Open Group		     2013			     grp.h(0P)

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