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Updating Packages Using Apt On Old Debian Installs
Sep 20th, 2016 by pixel

When attempting to install a new package or update an existing package if you are presented with the error


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E: Release file expired, ignoring http://archive.debian.org/debian-archive/debian/dists/squeeze-lts/Release (invalid since 189d 0h 42min 32s)

You will need to execute the following command as root:


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$ echo 'Acquire::Check-Valid-Until "false";' > /etc/apt/apt.conf.d/90ignore-release-date

And then perform…


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$ apt update

or if you are using aptitude…


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$ aptitude update

You may need to execute the above command twice to make sure everything is up to date.