That should be cmd !*. !$ would only be the final argument to the previous command, which you can also insert with alt-. (and pressing alt-. again will cycle th

That should be cmd !*. !$ would only be the final argument to the previous command, which you can also insert with alt-. (and pressing alt-. again will cycle through final arguments to earlier commands). Adding :p to the end of a history expansion (like !$:p) will cause it not to be executed, but the expanded command line will be echoed and put in your history so you can check edit it.