GETPWENT(3) — UNIX Programmer’s Manual
NAME
getpwent, getpwuid, getpwnam, setpwent, endpwent − get password file entry
SYNOPSIS
#include <pwd.h>
struct passwd ∗getpwent()
struct passwd ∗getpwuid(uid)
int uid;
struct passwd ∗getpwnam(name)
char ∗name;
setpwent()
endpwent()
DESCRIPTION
Getpwent, getpwuid and getpwnam each return a pointer to an object with the following structure containing the broken-out fields of a line in the password file.
The fields pw_quota and pw_comment are unused; the others have meanings described in passwd(5).
Getpwent reads the next line (opening the file if necessary); setpwent rewinds the file; endpwent closes it.
Getpwuid and getpwnam search from the beginning until a matching uid or name is found (or until EOF is encountered).
FILES
/etc/passwd
/etc/yp/domainname/passwd.byname
/etc/yp/domainname/passwd.byuid
SEE ALSO
getlogin(3), getgrent(3), passwd(5), ypserv(8)
DIAGNOSTICS
Null pointer (0) returned on EOF or error.
BUGS
All information is contained in a static area so it must be copied if it is to be saved.
7th Edition