redhat man page for setpwent

GETPWENT(3)						     Linux Programmer's Manual						       GETPWENT(3)

NAME
       getpwent, setpwent, endpwent - get password file entry

SYNOPSIS
       #include <pwd.h>
       #include <sys/types.h>

       struct passwd *getpwent(void);

       void setpwent(void);

       void endpwent(void);

DESCRIPTION
       The getpwent() function returns a pointer to a structure containing the broken out fields of a line from /etc/passwd.  The first time it is
       called it returns the first entry; thereafter, it returns successive entries.

       The setpwent() function rewinds the file pointer to the beginning of the /etc/passwd file.

       The endpwent() function closes the /etc/passwd file.

       The passwd structure is defined in <pwd.h> as follows:

	      struct passwd {
		      char    *pw_name;       /* user name */
		      char    *pw_passwd;     /* user password */
		      uid_t   pw_uid;	      /* user id */
		      gid_t   pw_gid;	      /* group id */
		      char    *pw_gecos;      /* real name */
		      char    *pw_dir;	      /* home directory */
		      char    *pw_shell;      /* shell program */
	      };

RETURN VALUE
       The getpwent() function returns the passwd structure, or NULL if there are no more entries or an error occurs.

ERRORS
       ENOMEM Insufficient memory to allocate passwd structure.

FILES
       /etc/passwd
	      password database file

CONFORMING TO
       SVID 3, BSD 4.3

SEE ALSO
       fgetpwent(3), getpwnam(3), getpwuid(3), getpw(3), putpwent(3), passwd(5)

GNU
								    1996-05-27							       GETPWENT(3)