How can you run a command in your normal shell and then pipe it to Vim?

A typical use case could be to run a find command and open the found file in Vim.

Answer: You can use command substitution.

vim $(find . -name example.txt)

Here’s a useful command that I’m using now:

nvim (fd | fzy)

(I’m using fish as my interactive shell. Thus I don’t need to use $. In bash, you’d type nvim $(fd | fzy)).

fd is a faster and more intuitive alternative to find.
fzy is a fuzzy text selector.

Running nvim (fd | fzy) will open a terminal selection option where you can type in the filename you’re searching for. Hitting the Enter key will open the file in NeoVim.

Further Reading