':.:':.:::.      .,-:::::/ :::::::..    :::.  .-:.     ::-.
 `;' `;;;`;;   ,;;-'````'  ;;;;``;;;;   ;;`;;  ';;.   ;;;;'
      ,[[ '[[, [[[   [[[[[[/[[[,/[[['  ,[[ '[[,  '[[,[[['  
     c$$$cc$$$c"$$c.    "$$ $$$$$$c   c$$$cc$$$c   c$$"    
      888   888,`Y8bo,,,o88o888b "88bo,888   888,,8P"`     
      YMM   ""`   `'YMUP"YMMMMMM   "W" YMM   ""`mM"        

#

Dial-in callback

Thu Oct 9 03:44:12 UTC 2014

In that same dial-up period at University I also set up a way that I could get files off my home computer while on campus.

I left my computer on all the time with the modem hooked up. From campus I'd call my home phone number and after a few rings my computer would answer. I'd written an ugly bash script that relied on a nifty program (whose name I forget) that told you which DTMF tones your modem was hearing. The bash script was a simple voicemail menu that, if I entered my super-secret number code, would:

1. Pause for 30(?) seconds.
2. Dial in to my ISP
3. E-mail its (dynamically assigned) IP address to me

Then I could FTP whatever I needed off my computer. When I was done I'd enter some kind of command that hung up the dial-in connection.

It took me quite a while to build and test this system and I only recall really having to use it once or twice.