I need some Bash 4.x features in my shell on macOS Catalina, and my scripts must run on Dash /bin/sh, which by default points to Bash 3.x.
However, there seems no way to point Dash to my homebrew Bash under /usr/local/bin.
chsh can only specify default shell but cannot point a specific shell to another shell.
I used to hack with mv and ln, but since Apple tightened user permission since Catalina, that road is blocked as well.
Please help.
