getpwent(), getpwuid(), getpwnam()
#include pwd.h>
struct passwd char &sstarf#star;pw_name;login name char &sstarf#star;pw_passwd;encrypted password int pw_uid;numeric user-id int pw_gid;numeric group-id char &sstarf#star;pw_gecos;GECOS field char &sstarf#star;pw_dir;home directory char &sstarf#star;pw_shell;default shell