open("/var/nis/NIS_COLD_START", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/.pwd.lock", O_WRONLY|O_CREAT, 0600) = -1 EACCES (Permission denied)
write(2, "useradd: unable to lock password"..., 38useradd: unable to lock password file