CODE EXAMPLE FOR SHELL

linux install certificate chain

Linux (Ubuntu, Debian)

    To add: 
        Copy your CA to dir /usr/local/share/ca-certificates/
        Use command: sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt
        Update the CA store: sudo update-ca-certificates
    To remove:
        Remove your CA.
        Update the CA store: sudo update-ca-certificates --fresh