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'