您可以在终端中使用简单的 autoremove 命令删除旧内核：
sudo apt-get autoremove --purge
由于某种原因，这对我不起作用，并且内核正在堆积：
apt list --installed | rg linux-image
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
linux-image-5.4.0-31-generic/focal-updates,focal-security,now 5.4.0-31.35 amd64 [installed]
linux-image-5.4.0-40-generic/focal-updates,focal-security,now 5.4.0-40.44 amd64 [installed]
linux-image-5.4.0-42-generic/focal-updates,focal-security,now 5.4.0-42.46 amd64 [installed]
linux-image-5.4.0-45-generic/focal-updates,focal-security,now 5.4.0-45.49 amd64 [installed]
linux-image-5.4.0-47-generic/focal-updates,focal-security,now 5.4.0-47.51 amd64 [installed]
linux-image-5.4.0-48-generic/focal-updates,focal-security,now 5.4.0-48.52 amd64 [installed]
linux-image-5.4.0-52-generic/focal-updates,focal-security,now 5.4.0-52.57 amd64 [installed]
linux-image-5.4.0-54-generic/focal-updates,now 5.4.0-54.60 amd64 [installed]
linux-image-5.4.0-56-generic/now 5.4.0-56.62 amd64 [installed,local]
linux-image-5.4.0-58-generic/focal-updates,focal-security,now 5.4.0-58.64 amd64 [installed]
linux-image-5.4.0-60-generic/focal-updates,focal-security,now 5.4.0-60.67 amd64 [installed]
linux-image-5.4.0-62-generic/focal-updates,focal-security,now 5.4.0-62.70 amd64 [installed]
linux-image-5.4.0-64-generic/focal-updates,now …