摘录自 https://www.zhihu.com/question/580286026/answer/3281762866

列出包

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sudo snap list

卸载所有snap包

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sudo snap remove

禁用snap的所有服务，tab补全一下

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systemctl disable snapd.

卸载snap

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sudo apt purge snapd

firefox 改地址

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sudo vim /etc/apt/preferences.d/firefox-no-snap
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Package: firefox*
Pin: release o=Ubuntu*
Pin-Priority: -1

添加 ppa 并安装deb形式的firefox

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sudo add-apt-repository ppa:mozillateam/ppa
sudo apt update
sudo apt install firefox