Which command is used to turn on a specific SELinux boolean?

The command that is used to turn on a specific SELinux boolean is "setsebool -P" because it not only sets the boolean value but also ensures that the change is persistent across reboots by applying the change to the SELinux policy. When using this command, it is crucial to understand that SELinux booleans are essentially flags that enable or disable certain features or behaviors in the SELinux security policy.

The command works by taking two parts: the first is the boolean you want to change, and the second is the value you want to assign to it, such as "on" or "off." By using the -P flag, you ensure that any changes made will remain in effect after the system is rebooted.

Using just "setsebool on" would not work as this syntax is incomplete and not valid for changing the boolean values. The commands "setsebool off" and "setsebool toggle" similarly do not address turning on a boolean specifically nor do they modify the policy for persistence. Thus, "setsebool -P" is the correct and most comprehensive approach to manage SELinux booleans.