How to verify vbox key? gpg: verify signatures failed
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My goal is to install VBox on my Ubuntu 18.04 machine. I tried this wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add - [sudo] password for mm: OK When I want to see key fingerprint gpg --with-fingerprint oracle_vbox_2016.asc gpg: WARNING: no command supplied. Trying to guess what you mean ... gpg: can't open 'oracle_vbox_2016.asc' I looked nat man gpg,then tried gpg --verify --with-fingerprint oracle_vbox_2016.asc gpg: verify signatures failed: Unexpected error If I change gpg --with-fingerprint oracle_vbox_2016.asc gpg: WARNING: no command supplied. Trying to guess what you mean ... pub rsa4096 2016-04-22 [SC] uid Oracle Corporation (VirtualBox archive signing key) <info@virtualbox.org> sub rsa4096 2016-04-22 [E]...