The last line is needed to install the required dependencies and complete Chrome installation.
To install 64bit version of Chrome, you have to change download path to https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb, like:
I have installed Ubuntu using netinstall to have more control as to what gets installed in the system. I have selected Lubuntu minimal installation in Software Selection (tasksel). It is pretty clean I should say.
Here are some of the tools that I install to make it more useful for my needs:
Customize Look and Feel (lxappearance) - LXDE GTK+ theme switcher
Chromium Browser (chromium-browser) - open source version of Google's Chrome browser
To sequence one command after another one can use & to do it. For example:
set test=hello & call echo %test%
set test="hello" sets the value and call echo %test% shows the result to the standard output. Note also the use of call instruction, that forces the interpreter to re-interpret echo otherwise it will not see changes made.