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    ###### tags: `Ubuntu` # Rename username and hostname in Ubuntu 通過更改系統選項裡的更改用戶名,根本改不掉terminal上面的用戶名和主機名 怎麼辦呢?只有更改系統裡,相關的配置文件了。 但既然這些文件是系統級的,那麼燒出差錯就可能導致無法登錄等問題 因此,務必照著以下步驟來,應該就不會出差錯。 ## 更改主機名 1. 修改hostname文件和hosts文件 ``` sudo vim /etc/hostname ``` 將裡面的名字改成你想要的主機名就可以了 然後保存退出 ``` sudo vim /etc/hosts ``` 同上 將原本的主機名改成想要的主機名 最後記得reboot, 就發現你的主機名更改成功了 ## 更改username(因為涉及的依賴比較多,所以容易出問題,注意) 這裡修改sudoer文件、shadow文件、修改user、修改passwd文件 1. 修改sudoer文件 ``` sudo vim /etc/sudoers ``` 複製root那一行的內容,然後將root改為舊用戶名以及新用戶名 ``` Example: root ALL=(ALL:ALL) ALL aaa ALL=(ALL:ALL) ALL(舊用户名) ubuntu ALL=(ALL:ALL) ALL(新用户名) ``` 最後保存時,如果正常保存的話,因為read-only所以無法保存 只要使用wq!保存即可 2. 修改shadow文件 ``` sudo vim /etc/shadow ``` 同樣,將舊用戶名改為新用戶名即可 3. 修改用戶目錄 ``` sudo mv 舊用戶名 新用戶名 ``` 更改了之後會影響vim的一些配置, 不要慌,這是正常的,繼續更改後續配置文件 4. 修改passwd文件 ``` sudo vim /etc/passwd ``` 同樣,舊用戶名改為新用戶名 這裡應該要改三處,最後再檢查三處是否相同且均為新用戶名 5. 修改group文件 ``` sudo vim /etc/group ``` 同樣,將舊用戶名改為新用戶名即可 6. 刪除舊用戶名權限,重啟 最後在/etc/sudoer 文件中刪除賦予舊用戶名權限那一行的內容 保存後退出reboot即可 [Reference](https://blog.csdn.net/weixin_39510813/article/details/76136820)

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