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Ubuntu 优化

2023-02-03

prog

linux

/

ubuntu

cloud-init#

二选一，禁用或移除。

禁用#

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sudo touch /etc/cloud/cloud-init.disabled

删除该文件就可以恢复。

移除#

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sudo apt purge cloud-init -y
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sudo rm -rf /etc/cloud && sudo rm -rf /var/lib/cloud/

snap#

原文链接

删除#

删掉所有的已经安装的 Snap 软件。#

snap list 用于查看已经安装的 Snap 软件，通过脚本全部删除：

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for p in $(snap list | awk '{print $1}'); do
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  sudo snap remove $p
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done

一般需要执行两次（桌面版三次），提示如下则正确执行：

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snap "Name" is not installed
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core20 removed
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snapd removed

再次执行，提示如下，表明已经删除干净：

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No snaps are installed yet. Try 'snap install hello-world'.

删除 Snap 的 Core 文件。#

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sudo systemctl stop snapd
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sudo systemctl disable --now snapd.socket
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for m in /snap/core/*; do
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   sudo umount $m
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done

删除 Snap 的管理工具。#

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sudo apt autoremove --purge snapd

删除 Snap 的目录。#

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rm -rf ~/snap
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sudo rm -rf /snap
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sudo rm -rf /var/snap
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sudo rm -rf /var/lib/snapd
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sudo rm -rf /var/cache/snapd

配置 APT 参数：禁止 apt 安装 snapd。#

正确配置（参看 apt_preferences）：

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sudo sh -c "cat > /etc/apt/preferences.d/no-snapd.pref" << EOL
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Package: snapd
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Pin: release a=*
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Pin-Priority: -10
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EOL

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a -> Archive
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c -> Component
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o -> Origin
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l -> Label
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n -> Architecture

验证效果：可以查询到该包，但是无法安装。

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$ apt list snapd
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Listing... Done
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snapd/jammy-updates 2.56.2+22.04ubuntu1 amd64
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N: There is 1 additional version. Please use the '-a' switch to see it
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$ sudo apt install snapd
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Reading package lists... Done
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Building dependency tree... Done
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Reading state information... Done
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Package snapd is not available, but is referred to by another package.
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This may mean that the package is missing, has been obsoleted, or
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is only available from another source
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E: Package 'snapd' has no installation candidate