Linux: A fix for when you receive a signature error with Google Chrome during updates

If you receive an error similar to this:
An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.google.com/linux/earth/deb stable Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 1397BC53640DB551
W: Failed to fetch http://dl.google.com/linux/earth/deb/dists/stable/Release.gpg The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 1397BC53640DB551
W: Some index files failed to download. They have been ignored, or old ones used instead.

You can easily remedy this problem by updating Google’s signature:
wget -q -O – https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add –

By: J Santos
Example by: Timothy Conrad