New permission nodes to disable any command, factions.disableCommand.<command>, along with factions.disableCommand.none node which forcibly makes none disabled (for * permission users or similar); for <command>, you must use the first command alias given in the /f help information (for example, "show" instead of "who" for that particular command)

src/com/massivecraft/factions/Factions.java

@@ -340,6 +340,10 @@ public class Factions extends JavaPlugin {
 		return hasPerm(sender, "factions.worldOptions");
 	}
 	
+	public static boolean isCommandDisabled(CommandSender sender, String command) {
+		return (hasPerm(sender, "factions.commandDisable."+command) && !hasPerm(sender, "factions.commandDisable.none"));
+	}
+	
 	private static boolean hasPerm(CommandSender sender, String permNode) {
 		if (Factions.Permissions == null || ! (sender instanceof Player)) {
 			return sender.isOp() || sender.hasPermission(permNode);

src/com/massivecraft/factions/commands/FBaseCommand.java

@@ -87,6 +87,12 @@ public class FBaseCommand {
 			return false;
 		}
 		
+		// make sure player doesn't have their access to the command revoked
+		if (Factions.isCommandDisabled(sender, aliases.get(0))) {
+			sendMessage("You lack the permissions to "+this.helpDescription.toLowerCase()+".");
+			return false;
+		}
+		
 		if (parameters.size() < requiredParameters.size()) {
 			sendMessage("Usage: "+this.getUseageTemplate(false));
 			return false;