[ReeZey]

is it possible to set / and ! both to silence commands so that it doesn't write in chat when you type a command?

[Halt]

Yes, but you're looking in the wrong area. Are you asking for SM in general or one mod in particular?

[fiction]

Open addons/sourcemod/configs/core.cfg and change this:

	/**
	 * String to use as the public chat trigger.  Set an empty string to disable.
	 */
	"PublicChatTrigger"		"!"
	
	/**
	 * String to use as the silent chat trigger.  Set an empty string to disable.
	 */
	"SilentChatTrigger"		"/"

To this:

	/**
	 * String to use as the public chat trigger.  Set an empty string to disable.
	 */
	"PublicChatTrigger"		""
	
	/**
	 * String to use as the silent chat trigger.  Set an empty string to disable.
	 */
	"SilentChatTrigger"		"/!"