Hi there,
how does apt-get upgrade know when a new version of a package should be installed? I guess it somehow parses e.g. the Contents-amd64.gz but which parts of it are used to determine package X has to be upgraded? Is merely the version number used? I know the hash values are used for signature checking but are they also involved otherwise? I don't know how it is handled by Debian but afaik FreeBSD fequently recompiles packages which have the same version number in the end but different hash values and the latter ones are then used to check if a package needs to be upgraded.
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How does apt-get check for new package versions?
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stevepusser
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Re: How does apt-get check for new package versions?
"Apt-get update" gets a list of packages and their versions that are available from the repository. That's it, AFAIK.nemle2 wrote:Hi there,
how does apt-get upgrade know when a new version of a package should be installed? I guess it somehow parses e.g. the Contents-amd64.gz but which parts of it are used to determine package X has to be upgraded? Is merely the version number used? I know the hash values are used for signature checking but are they also involved otherwise? I don't know how it is handled by Debian but afaik FreeBSD fequently recompiles packages which have the same version number in the end but different hash values and the latter ones are then used to check if a package needs to be upgraded.
MX Linux packager and developer