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The command that can be used to change the SELinux mode temporarily is setenforce. When executed, this command allows you to switch between enforcing and permissive modes. In enforcing mode, SELinux policy is enforced, and any access denials are logged; in permissive mode, violations are only logged, but access is not restricted.
This temporary change is essential for testing configurations and troubleshooting SELinux-related issues without having to reboot the system or modify persistent settings in configuration files. The other commands listed, while related to SELinux management, serve different purposes. For instance, setsebool is used for modifying boolean values that enable or disable specific SELinux rules, semanage deals with managing SELinux policy components such as file contexts, and chcon alters the SELinux context of files but does not change the operational mode of SELinux itself.