http://giggles.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion/hacking/finger.html
.~
Ok, lets look on finger man page and see if there is something which help us: giggles@ctrl-c:~ $ man finger ...
HISTORY
The finger command appeared in 3.0BSD.
Linux NetKit (0.17) August 15, 1999 Linux NetKit (0.17) I just kept the useful part here, because the main reason the script dont worked is that finger on ctrl-c server is the BSD version which come packaged in Linux NetKit and I was looking on GNU version documentation duh!