ZSH is used by MacOS at the moment as interactive shell. I have these shitty laptops in school

Thank you!

I was asking about that ksh because I love OpenBSD and in OpenBSD it’s default shell. As I like to experiment with different operating systems, not only Linux I think that much better for me would be to learn POSIX shell. What’s difference between POSIX shell and bash by the way?

Install Linux

I don’t want to remove bash, that’s not my point. It’s hard dependency for my system. Now I understand that dash sucks as interactive shell. Maybe I’ll try fish as interactive shell just to check what it is, cause it’s popular at the moment. But as I’m forced to have bash installed and it’s great for interactive shell usage I will stick with it :)

RAM doesn’t matter for me. Smaller code base is reducing attack surface for sure.