一、编辑 dnf.conf 文件
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| sudo vi /etc/dnf/dnf.conf
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二、在[main]下边添加 installonly_limit
数字 2表示需要保留的内核数量,包含当前在使用的最新内核
三、执行 sudo dnf update 删除旧内核
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| duwei@probiecoder:~$ sudo dnf update Updating and loading repositories: dRepositories loaded. Package Arch Version Repository Size Removing: kernel x86_64 6.17.4-200.fc42 <unknown> 0.0 B kernel-core x86_64 6.17.4-200.fc42 <unknown> 98.8 MiB kernel-modules x86_64 6.17.4-200.fc42 <unknown> 95.6 MiB kernel-modules-core x86_64 6.17.4-200.fc42 <unknown> 68.3 MiB kernel-modules-extra x86_64 6.17.4-200.fc42 <unknown> 4.2 MiB
Transaction Summary: Removing: 5 packages
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