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apt-get update && apt-get upgrade -y && apt-get dist-upgrade -y && apt-get install packagename

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys

udo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6D975C4791E7EE5E 5A9BF3BB4E5E17B5 7FB8BEE0A1F196A8"

output: gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com"

sudo apt-get update && && sudo apt-get upgrade -y && sudo apt-get dist-upgrade -y && sudo apt-get install packagename