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不可刪除的/etc/resolv.conf

tag-icon • tag-icon filesystem permissions resolv.conf
不可刪除的/etc/resolv.conf

今天升級到 12.04 期間，我在運行套件的安裝後掛鉤時遇到錯誤resolvconf：

Setting up resolvconf (1.63ubuntu11) ...
resolvconf.postinst: Error: Cannot replace the current /etc/resolv.conf with a symbolic link because it is immutable. To correct this problem, gain root privileges in a terminal and run 'chattr -i /etc/resolv.conf' and then 'dpkg --configure resolvconf'. Aborting.

好吧，我當然嘗試過運行chattr -i /etc/resolv.conf，但dpkg --configure resolvconf產生了同樣的錯誤。

我嘗試手動移動或刪除該文件，但即使作為 root 也無法執行此操作：

sudo mv /etc/resolv.conf /etc/resolv.conf.old 
mv: cannot move `/etc/resolv.conf' to `/etc/resolv.conf.old': Operation not permitted

sudo rm /etc/resolv.conf                                                       
rm: cannot remove `/etc/resolv.conf': Operation not permitted

我能夠在 /etc 中建立然後刪除檔案（作為 root），因此 root 分割區不是以唯讀方式安裝的。也:

lsattr /etc/resolv.conf
-----a--------- /etc/resolv.conf

答案1

就我而言，是文件的不可變屬性導致的。也如此sudo chattr -a -i /etc/resolv.conf

答案2

根據幫助文件 ( man chattr)，

A  file  with the `a' attribute set can only be open in append mode for writing.

在您的情況下，該檔案具有此屬性

The  operator  `+'  causes  the  selected attributes to be added to the
       existing attributes of the files; `-' causes them to  be  removed;

所以嘗試的命令是

sudo chattr -a /etc/resolv.conf

並嘗試使用再次列出屬性

lsattr /etc/resolv.conf

然後嘗試刪除該文件

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