Download Chromedriver
This should download the latest version of Chromedriver, and extract it to the correct location, with the correct permissions.
version=$(curl -s "https://chromedriver.storage.googleapis.com/LATEST_RELEASE")
wget -qP /tmp/ "https://chromedriver.storage.googleapis.com/${version}/chromedriver_linux64.zip"
sudo unzip -o /tmp/chromedriver_linux64.zip -d /usr/bin
The permissions should be 755 by default, but if they aren't, you can run:
sudo chmod 755 /usr/bin/chromedriver
If you want a specific version, see the index page, or the website.
You can also edit the above commands to use LATEST_RELEASE_80, if you wanted version 80, for example.
Update to latest Chrome
If you don't already have the latest version of Google Chrome, you may need to update it with:
sudo apt-get --only-upgrade install google-chrome-stable
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