Running commands in Neovim Lua

You can just run a command, no output and it's blocking:

os.execute('echo hello')

Or there's the Neovim job system:

local job = vim.fn.jobstart(
    'echo hello',
    {
        cwd = '/path/to/working/dir',
        on_exit = some_function,
        on_stdout = some_other_function,
        on_stderr = some_third_function
    }
)

https://www.reddit.com/r/neovim/comments/y2by27/is_there_a_way_to_run_terminal_commands_with_lua/