How to create AWK scripts with shebang that allows in-place modifications?

Question

I want create a awk script with a shebang such that

./main.awk text.txt

performs in-place modification in text.txt. Inspired by a previous solution, I tried something like

#!/usr/bin/awk -i inplace -f

but it didn't work.

Answer 1

Use /usr/bin/env with the -S option to process multiple arguments:

#!/usr/bin/env -S awk -i inplace -f

See man env:

-S, --split-string=S
       process and split S into separate arguments; used to pass multiple arguments on shebang lines