Linux / Unix Command: getpwent

Linux / Unix Command: [b]getpwent [/b]

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.