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@dreampuf
Last active July 2, 2020 07:55
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Install JDK8 on Jessie in 2020
cat > /etc/apt/sources.list.d/openjdk.list <<"EOF"
deb [check-valid-until=no] http://archive.debian.org/debian jessie-backports main
EOF
apt-get update
apt install -t jessie-backports openjdk-8-jdk
update-alternatives --config java # select java1.8
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dreampuf commented Jul 2, 2020

how to update the legacy key of repositories:

apt-key list | grep expired | cut -f 4 -d ' ' | cut -f 2 -d '/' | xargs apt-key adv --keyserver keys.gnupg.net --recv-keys 

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