I'm guessing here but it seems you are trying to run normal mode mappings in batch mode (IOW, vim -c <cmd>). Your 2wi ... I'm assuming that refers to [count]<Leader>wi, a VimWiki mapped command in the docs...?
To run such mappings you need to use the norm command (:h :norm).
For example, vim -c 'norm 2\wi' if your Leader key is the default \ (backslash).
BTW, if you want to run multiple commands using this method just use a separate -c for each. Example:
vim -c 'norm 2\wi' -c 'wq'