Homebrew Transferring to a second sd card

[BlankUsername32]

I have 2 sd cards, one with all the files required to run homebrew. Is there a way to run an ftp server or something, switch the card and move files onto the second?

I'm hacking a friend's 3ds and don't have access to an adapter where I am.

 

[Hayato213]

https://github.com/mtheall/ftpd

I believe you can use this, but it might take a while to copy files.