Here is a small batch file that will retrieve Android Studio debug certificate fingerprints. Make sure that keytool.exe is in your %PATH%
@echo off keytool -list -v -keystore "%USERPROFILE%\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android pause |
Copy / paste the a bough commands in an empty file and save it with a .bat extension.
Android Studio debug certificate fingerprints
Eclipse on GNU/Linux has an annoying bug with hotkeys for users with multiply keyboard layouts.
For example when the user is working with the English keyboard layout, hotkeys such as “Ctrl-C”, “Ctrl-V” will work as expected, but when switched to different layout (ex: Bulgarian) the keys will no longer work.
After a bit of searching I found a fix for this inconvenience at GitHub.
Thank you “amozzhuhin“!
After the installation of the proprietary NVidia graphics drivers on Ubuntu, Debian or Linux Mint your console screen resolution will be messed up. As a developer I use the frame buffer console from time to time and I need it at the resolution of my primary monitor (1680×1050). To address the problem (as it’s almost always with GNU/Linux) we need to edit some configuration files and issue some commands.
First start Konsole or other terminal emulator, login as root by typing:
su |
and enter your password when prompted.
Using vim, nano or your favourite command line text editor, open /etc/grub.d/00_header. In the example below we are using Vim.
vim /etc/grub.d/00_header |
Search for “set gfxmode=${GRUB_GFXMODE}” and below that line add
set gfxpayload=keep |
Save and close the file.
Reboot your system and at the Grub2 screen press ‘C’ and type ‘vbeinfo‘. Take a note on the supported frame buffer resolution and choose the one you like. In my case the chosen resolution was 1680x1050x32. Type ‘exit‘ or reboot your system from the restart button.
Start GNU/Linux again, start a terminal emulator, login as root (by typing su) and open “/etc/default/grub“. Uncomment the line “GRUB_GFXMODE=640×480“, change the value after the = sign to the previously chosen screen resolution. In my case:
GRUB_GFXMODE=1680x1050x32 |
and add the following line below:
GRUB_GFXPAYLOAD_LINUX=keep |
Save and close the file.
Still logged as ‘root’ execute the following commands:
update-grub2 |
update-initramfs -u |
Reboot your system. You should now have a frame buffer console with a decent screen resolution.
I finally got my hands on some 51/4” diskettes for the Pravetz. They are in good condition and full of old games and programs. There is also a pack of cleaning diskettes for the floppy drive. I’m still looking for more.
I’m inpatient to find a monitor, to see if this dinasour runs.
My software development career started 20 years ago. It’s sound crazy, but when I was 8, I was introduced to my first computer and Turbo Pascal.
Turbo Pascal IDE
My first computer was Pravetz-16. It was something new and interesting for me, and I was hooked immediately.
Years and technology changed, the old Pravetz died from natural causes and was thrown for recycling.
Now almost 20 years later I felt the urge to have my old computer back and stated searching. It was hard and long search until finally I saw an ad that a scrap depot is selling an old Pravetz computer. Not wasting time I called them and brought it for 100 leva ( around 70 USD ). It was the computer only, with ought the peripherals. Before the deal I asked them to try turning it on. They said it’s starting, so I have it delivered to me.
Front view of the PC
Except from being full of dust, dead spiders and dirt all around and with some minor hardware problems like the serial board apparently dead. This specimen was almost authentic. It’s still has all the marks from the factory and even a warranty card and instruction manual for the floppy disk.
Warranty card. Expired 24 years ago
From the warranty card I found out that this PC was one of the last produced before the collapse of the communist regime in Bulgaria. The production date is 12.12.1989 and it’s apparently the turbo version with the following specs:
CPU: 80286 at 12 Mhz
RAM: 1 MB
HDD: 20 MB
5 1/4″ Inch Floppy drive
LPT printer port
COM port
CGA video card (VDO-3)
Floppy drive instruction manual
Support contact information sticker
Model sticker at the back
Inside of the PC
The power switch
View from the back. You can see couple of dead spiders over the video card
It took me 7 hours to disassemble the PC, clean it screw by scree and put it back together. Every non electrical part was washed and the electrical ones were cleaned with alcohol solution and an old tooth brush. The old Pravetz now shines as new.
I also found a keyboard yesterday, and ordered a pile of floppy disks. They should be here soon.
The keyboard
Now I’m looking for a CGA monitor, to be finally able to turn it on and see will it boot. Meanwhile the keyboard will be disassembled and cleaned.