What does Could not resolve host: get.rvm.io mean in UBUNTU with a specific command?

Question

linux

I am new to linux.
I want the command curl -L get.rvm.io | bash -s stable install RVM
says Could not resolve host: get.rvm.io...
What does this mean??? Although I have curl.
I had a known_hosts file in .ssh/, and I deleted it, maybe that's the issue?

Answer 1

Quite right, you need to register the DNS server. Enter the commands in the console:
cat > /etc/resolv.conf << EOF
nameserver 8.8.4.4
nameserver 8.8.8.8
EOF

Answer 2

stackoverflow.com/questions/11937157/could-not-res...
They say DNS from Google should be
installed https://developers.google.com/speed/public-dns/doc...