文件操作 - removal_denylist.cfg
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文件: /usr/share/ubuntu-release-upgrader/removal_denylist.cfg
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# deny list of packages that should never be removed ubuntu-standard ubuntu-minimal ubuntu-desktop$ kubuntu-desktop xubuntu-desktop lubuntu-desktop mythbuntu-desktop ubuntustudio-desktop ubuntu-mate-core ubuntu-mate-desktop # ubuntu-release-upgrader should not remove itself or update-manager update-manager$ update-manager-core ubuntu-release-upgrader-core # if for example postgresql-10 is purged the cluster can be dropped which we # should prevent (LP: #871893, #1825563) ^postgresql-.*[0-9]\.[0-9].* ^postgresql-.*[0-9][0-9].* # the upgrade runs in it ^screen$ # the upgrade might be run over ssh ^openssh-server$
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