How to search Coronavirus Tracing App Koronavilkku users

Since finnish version of Coronavirus Tracing App called Koronavilkku was released I have been wanting to find out if it is possible to see how many Koronavilkku users there is around me. So I have been playing with this app for about two weeks now and it seems to be working.

Because of an old project I happened to have Bluetooth LE scanner called RaMBLE – Bluetooth LE Mapper installed on my phone, so I started with that. I found out that if I scan bluetooth LE devices and use “Service UUID” filter “FD6F” I could find Koronavilkku users around me. Because Koronavilkku is using “Google’s & Apple’s Exposure Notification Framework” you should get this work on other countries too.

First add filters: RaMBLe filters for Covid Blinker

And then just turn on the scanner: RaMBLe Covid Blinker Results

Now there is even app for this called UUID 0xFD6F Scanner but I find it much more interesting to use tools that you can use for many purposes than these kind of apps.

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Scripts that I use on my Raspberry Pi #2

This simple script just checks if your Raspberry Pi is connected to the Internet or not. So using this script is really easy, it will make Raspberry Pi reboot itself if it’s not connected to the Internet or do something else to get it connected again. This has saved me so many times when I have been using my headless Raspberry Pi setup and when my Raspberry Pi has been connected to Internet via 3G/4G USB modem and it has lost the connection once again.

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Scripts that I use on my Raspberry Pi #1

This script checks what your current external IP address and will let you know if it has changed since the last time you checked. You can easily modify this script to make your Raspberry Pi send you an email of it’s external IP address and send email when it’s email address has changed so this is pretty useful script for many kind of headless Raspberry Pi uses.

#!/bin/sh

ip1=""
ip2=""
ip="/scripts/ip.txt"

[ ! -f $ip ] && touch $ip

read ip1 < $ip
ip2=$(wget -U 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.6) Gecko/20070802 SeaMonkey/1.1.4' -qO- ifconfig.me/ip)

 Continue reading Scripts that I use on my Raspberry Pi #1

How to use Clonezilla on wireless network

Start Clonezilla normally but after “Collecting the info of network devices” and “Getting the link status of…” lines you have to choose your wireless netword card probably wlan0 and now on “Choose the mode to setup the network for this network card: wlan0” you choose

"enter_shell Enter_command_line_prompt,_Do_it_manually" 

and hit enter.

Then you will get info “Now enter another shell. When everything is done, run “exit” to go back to the original program. Press “Enter” to continue” here you just hit enter again.

Now you can check if your wlan nic is ok and run command:

iw dev

and you should see couple of lines and one line should be “Interface wlan0”.

Now we can bring our wlan nic up with a command:

ip link set wlan0 up

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VMWare Esxi: Shutting down firmware services… error

I was installing vmware esxi one of my servers and got error to my screen:

VMWare esxi error


Shutting down firmware services…
Page allocation error: Out of resources
Failed to shutdown the boot services.
Unrecoverable error

First I thought that the problem was with my install media so I did new usb dongle with Rufus but got the same error.

When I started to check my BIOS settings and found out that if I have UEFI boot chosen I get that error but if I change it to “Legacy BIOS” vmware esxi works perfectly.

Boot List Options

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