richard@richard-iMac:~$ sudo apt-get update
Hit:1 http://download.virtualbox.org/virtualbox/debian xenial InRelease
Hit:2 http://gb.archive.ubuntu.com/ubuntu xenial InRelease
Hit:3 http://ppa.launchpad.net/sixxie/ppa/ubuntu xenial InRelease
Ign:4 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:5 http://gb.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:6 http://ppa.launchpad.net/c.falco/mame/ubuntu xenial InRelease
Hit:7 http://gb.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:8 http://dl.google.com/linux/chrome/deb stable Release
Hit:9 http://ppa.launchpad.net/ubuntu-mate-dev/welcome/ubuntu xenial InRelease
Hit:10 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:11 http://repo.steampowered.com/steam precise InRelease
Reading package lists... Done
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
W: Target Translations (main/i18n/Translation-en_GB) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'http://dl.google.com/linux/chrome/deb stable InRelease' doesn't support architecture 'i386'
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
W: Target Translations (main/i18n/Translation-en_GB) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4
richard@richard-iMac:~$ ls /etc/apt/sources.list.d/google-chrome.list
/etc/apt/sources.list.d/google-chrome.list
richard@richard-iMac:~$ cat /etc/apt/sources.list.d/google-chrome.list
### THIS FILE IS AUTOMATICALLY CONFIGURED ###
# You may comment out this entry, but any other modifications may be lost.
deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
deb http://dl.google.com/linux/chrome/deb/ stable main
richard@richard-iMac:~$