Being a Debian user, I always like to experiment with the latest packages, and so I have many third party debian repositories listed in the sources.list file. Whenever I am adding it for the first time, I usually get the error:
“The following signatures couldn’t be verified because the public key is not available”
On googling multiple solutions can be found to add a public key using apt-key, but most of them has 3 or 4 commands, including downloading the key, move it to a file and then import. But the one line command that does the same is as below:
apt-key adv --keyserver keyserver_url --recv-keys key_id
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