Linux / Unix Command: getpwent

Linux / Unix Command: getpwent

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.
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