How to restrict wildcard use?

To restrict wildcard use in the /etc/sudoers file while still allowing specific commands, you can follow these best practices:

Specify Exact Paths: Instead of using wildcards, specify the exact command paths that users are allowed to execute. This minimizes the risk of unintended command execution.
```
username ALL=(ALL) /usr/bin/specific_command
```
Limit Wildcard Scope: If you must use wildcards, limit their scope as much as possible. For example, instead of allowing all commands in a directory, specify only the necessary commands:
```
username ALL=(ALL) /usr/bin/command1, /usr/bin/command2
```
Use Command Aliases: Define command aliases in the sudoers file to group specific commands together. This allows you to manage permissions more easily without using broad wildcards.
```
Cmnd_Alias MY_COMMANDS = /usr/bin/command1, /usr/bin/command2
username ALL=(ALL) MY_COMMANDS
```
Avoid Using ALL with Wildcards: Be cautious when using ALL in combination with wildcards, as it can grant excessive permissions. Instead, specify the exact commands or use command aliases.
Review and Test: Regularly review the sudoers configuration and test it to ensure that users have only the permissions they need. Use the visudo command to safely edit and validate the configuration.

By following these practices, you can effectively restrict wildcard use and maintain tighter control over user permissions in the sudoers file. If you have further questions, feel free to ask!