Title: The Old Computer Challenge V2: back to RTC
       Author: Solène
       Date: 01 July 2022
       Tags: life offline oldcomputerchallenge nocloud
       Description: Meet the old computer challenge second edition, an entire
       week with only 60 minutes a day of Internet connectivity.
       
       # Introduction
       
       Hello! Let me start straight into the topic: The Old Computer
       Challenge, second edition!
       
 (HTM) Some readings if you don't know about the first Old Computer Challenge
       
       The first edition of the challenge consisted into spending a week
       (during your non-work time) using an old computer, the recommended
       machine specifications were 1 core and 512 MB of memory at best,
       however some people enjoyed doing this challenge with other
       specifications and requirements, and it's fine, the purpose of the
       challenge is to have fun.
       
       While experimenting the challenge last year, a small but solid
       community gathered on IRC, we shared tips and our feelings about the
       challenge, it was very fun and a good opportunity to meet new people. 
       One year later, the community is still there and over the last months
       we had regular ideas exchange for renewing the challenge.
       
       I didn't want to do the same challenge again, the fun would be spoiled,
       and it would have a feeling of déjà vu.  I recently shared a new idea
       and many adopted it, and it was clear this would be the main topic of
       the new challenge.
       
       # The Old Computer Challenge v2
       
       This new challenge will embrace the old time of RTC modems with a
       monthly time budget.  Back in these days, in France at least, people
       had to subscribe to an ISP for a given price, but you would be able to
       connect only for 10, 20, 30, 40... hours a month depending on your
       subscription.  Any extra hour was very expensive.  We used the Internet
       the most efficiently possible because it was time limited (and very
       slow, 4 kB/s at best).  Little story, phone lines were not available
       while a modem was connected, and we had to be careful not to forget to
       manually disconnect the modem after use, otherwise it would stay
       connected and wasting the precious Internet time! (and making expensive
       bills)
       
       The new challenge rules are easy: you are allowed to _connect_ your
       computer to the Internet for a maximum cumulated time of 1h per day,
       from 10th to 17th July included.  This mean you can connect six times
       for ten minutes, twice for thirty minutes, or once for one hour in the
       day.
       
       Remember, the challenge is about having fun and helping you to step
       back on your computer habits, it's also recommended to share your
       thoughts and feeling a few times over the challenge week on your usual
       medias.  There is nothing to prove to anyone, if you want to cheat or
       do the challenge with two or six hours a day, please do as you prefer.
       
 (IMG) The old computer challenge v2 cover
       
       This artwork was created by our community member prahou (thanks!), and
       is under the license CC BY-NC-ND 4.0, you can reuse it as-this.  It
       features a CD because back in the RTC time, ISP were offering CDs to
       connect to the Internet and subscribe from home, I remember using those
       as flying discs.
       
 (HTM) A page gathering the reports from all the participants
       
       # Time accounting
       
       While I don't have any implementation yet, here is an ideas list to
       help you to accounting your Internet time:
       
       * simple but effective, use airplane mode for Wi-Fi or unplug Ethernet,
       and use a chronometer when you connect
       * adding/removing the default route can be easier than playing with the
       firewall and still allow you to use the local network
       * a script that would try a ping every minute and account success in a
       file with a timestamp, it becomes easy to get information from this
       * some firewall rules you would trigger after a sleep 3600 command
       * define a time slot in your day for the challenge and use a cron job
       to manipulate the firewall to allow/block network depending on the
       current time
       
 (HTM) prahou's shell script counting time and enabling/disabling Internet, you need to modify NETOFF and NETON to adapt to your operating system
       
       # Frequently asked questions
       
       ## Does it apply on work time?
       
       No.
       
       ## Can I have an exemption?
       
       If you really need to use the Internet for something, it's up to you.
       Don't make your life unbearable for a week because of the challenge.
       
       ## Does it apply to 1h/day per device?
       
       No, it's 1h cumulated for all your devices, including smartphones.
       
       ## Where is the community?
       
       We are reachable on #oldcomputerchallenge IRC channel on the
       Libera.chat network
       
 (HTM) Website of the libera.chat network and instructions how to connect
       
       However, during the challenge I expect the channel to be quiet because
       people will be limited to 1h a day.