Single Hotfix update for Windows 7 or higher:

C:\\> wusa.exe C:\\<PATH TO HOTFIX>\\Windows6.0KB934307-x86.msu

Set of single hotfix updates for pre Windows 7 by running a batch script:

@echo off
setlocal
set PATHTOFIXES=E:\\hotfix
%PATHTOFIXES%\\Q123456_w2k_sp4_x86.exe /2 /M
%PATHTOFIXES%\\Ql23321_w2k_sp4_x86.exe /2 /M
%PATHTOFIXES%\\Q123789_w2k_sp4_x86.exe /2 /M

To check and update Windows 7 or higher:

C:\\> wuauclt.exe /detectnow /updatenow