will look like this when I finish: "strace kill x iceweasel $@". Sorry
if I'm asking noob questions, this is new territory for me :)
No, on line 54 it should say "strace iceweasel $@" (without quotation marks).
When you've saved the file, you have to kill the X process, you could install "killall" and use the command "killall X", or find the ID of the X process with the "ps" command and use the regular kill command to kill just that process. When you've killed X, the modified script will be loaded when X has realoaded.