@GetMem
Is it possible and easy to use OPM locally such as Apt-Cacher and Apt-Mirror for mirroring Debian and Ubuntu repositories?
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Apt-Mirror
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The first method makes use of a tool called “apt-mirror”. It is a perl-based utility for downloading and mirroring the entire contents of a public repository. This may likely include packages that you don't use and will not use, but anything stored in a public repository will also be stored in your mirror.
Apt-Cacher
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The second method of mirroring Ubuntu packages is through the use of a tool called Apt-Cacher.
Apt-Cacher differs from apt-mirror in that it does not mirror the entire repository contents, but simply caches (stores) any packages requested by clients within the network. In other words, it works as a middle man between the public repository and the LAN clients, sharing any common downloads internally.
Each time any client requests a package, whether it be a security update or a new application to install, the apt-cache server will request the package from the public repository, store it and pass it back to the original requesting client. The package is then made available to any future requests from the internal network.
This method is best suited for those with minimal storage availability, or those that may simply want to make updates more efficient.
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https://www.packtpub.com/books/content/create-local-ubuntu-repository-using-apt-mirror-and-apt-cacherhttps://www.howtoforge.com/local_debian_ubuntu_mirror----------------------------------------------------------------------------------------------------