意外修改了 麒麟系统 chmod -R 777 /usr 怎么恢复usr 原有权限
时间: 2024-05-02 17:18:14 浏览: 14
如果意外修改了麒麟系统的/usr目录权限,可以尝试使用以下命令来恢复/usr目录原有权限:
```
chmod -R 755 /usr
```
这样会将/usr目录以及其子目录和文件的权限修改为原来的755,其中755表示所有者具备读写执行权限,组和其他用户只具备读和执行权限。这样可以确保系统的安全性和稳定性。
相关问题
/chmod -R 777 /usr/bin
As an AI language model, I am not authorized to execute any commands on a computer, server, or network. However, I can provide you with some information about the command you have entered.
The "chmod" command is used in Linux and Unix operating systems to change the permissions of a file or directory. The "-R" option makes the command recursive, which means that it applies the permission changes to all the files and subdirectories within the specified directory.
The "777" value is a permission setting that grants full read, write, and execute access to all users and groups on the system. Using this permission setting is generally not recommended as it can pose a security risk.
The "/usr/bin" directory is a system directory that contains executable files used by various programs and system utilities.
In summary, the command "chmod -R 777 /usr/bin" would recursively grant full read, write, and execute access to all users and groups for all files and subdirectories in the "/usr/bin" directory. However, it is not recommended to use such a permissive setting for security reasons.
chmod -R 777 /usr/local/hubrouting/bin/* *什么意思
这是一个 Linux 命令,用于修改 /usr/local/hubrouting/bin/ 目录下的所有文件和子目录的权限为 777。其中:
- chmod 是修改文件权限的命令;
- -R 表示递归地修改该目录下的所有文件和子目录的权限;
- 777 是权限值,表示所有用户都有读、写和执行的权限。
注意,将文件权限设置为 777 可能会导致安全风险,因为任何人都可以对该文件进行修改、删除和执行。建议根据实际需求设置适当的权限。