Linux中如何防止某个关键文件被修改呢？
在 Linux 下，有些配置文件是不允许任何人（包括 root）修改的。为了防止被误删除或修改，可以设定该文件的“不可修改位(immutable)”。命令如下：
# chattr +i /etc/fstab
如果需要修改文件则采用下面的命令：
# chattr -i /etc/fstab
Linux中如何防止某个关键文件被修改呢？
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