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| 6e1488 | Qwas | 2024-11-25 11:41:14 | 1 | # Ubuntu 系统升级 |
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| 3 | 之前在天翼云薅了几台云主机，但是镜像只有 Ubuntu 20.04 的版本，为了使用新版本，升！ |
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| 5 | 查看当前 Ubuntu 版本 |
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| 7 | ```sh |
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| 8 | lsb_release -a |
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| 9 | ``` |
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| 11 | [预览图](https://static.qwas.fun/public/2024/11/ubuntu-20-04-6.png) |
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| 13 | ```sh |
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| 14 | echo "8.217.88.233 mirrors.ubuntu.com" >> /etc/hosts |
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| 15 | echo "8.217.88.233 archive.ubuntu.com">> /etc/hosts |
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| 16 | echo "8.217.88.233 security.ubuntu.com">> /etc/hosts |
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| 17 | ``` |
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| 19 | ```sh |
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| 20 | apt update |
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| 21 | apt upgrade -y |
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| 22 | ``` |
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| 24 | ```sh |
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| 25 | do-release-upgrade |
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| 26 | ``` |
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| 27 | 中间需要多次确认，新机子，无脑点 `Y`，不出意外的话，大约耗费半个小时，系统成功升级到 22.04。 |
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| 29 | 然而 `do-release-upgrade` 只能升级一个版本，于是再来一遍 `do-release-upgrade` |
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| 31 | [预览图](https://static.qwas.fun/public/2024/11/ubuntu-24-04-1.png) |
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| 33 | ## 注意 |
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| b6e2ad | Qwas | 2024-11-25 11:47:40 | 35 | 升级过程中，会自动启用 screen. 如因为网络原因，ssh断开了连接，重新连接 ssh 后，`screen -r id` 恢复终端。如遇到 `Attached` 无法恢复 `screen -d id` 断开后，重新 `screen -r id` |
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| 37 | [screen 预览图](https://static.qwas.fun/public/2024/11/screen.png) |