You could define a function that takes a parameter, which touches a file with the parameters value, chmods it and then opens it with nano?
create_exec() {
touch "$1"
chmod +x "$1"
nano "$1"
}
Then you could type create_exec file.sh
and it would do the rest for you.
Your warranty is now void. I am not responsible for bricked devices, flat tires, an empty fuel tank, or you getting fired because the fart app goes off at random. Please do some research if you have any concerns about features included in this ROM before flashing it! YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.