I tried 3 methods to run a custom script at boot time but none work

[utu]

Greetings, John

The commands you indicate here could all go into a few lines
of /etc/rc.local.
As root, use leafpad to put your lines just above the 'exit 0' line.
These go in after all other boot stuff, but I think it'll be ok.

[winger9]

Utu you're a genius. Thanks, your solution works. At some point I'd like to have a separate script file (or files) containing my personal scripts, that the boot executes (you know - not within rc.local), and earlier in the boot process preferably. But thanks for your present solution which will get me by for now.

John