RVM: "sha256sum nor shasum found"

Question

I've just installed RVM on a new machine and when switching into a directory containing a .rvmrc file (which I've accepted) I'm getting:

ERROR: Neither sha256sum nor shasum found in the PATH

I'm on OS X 10.5.8. — Probably missing something somewhere. Any ideas what's going on and how to fix this?

Answer 1

On MacOS Sierra run

$ shasum -a 256 filename

Based on @vikas027 comment just add

alias sha256sum='shasum -a 256' to your ~/.zshrc