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Well, in hope to get more reliable and modern firmware on my Totolink A850R router from aliexpress.com I decided to upgrade it by TOTOLINK A850R-V1.0.2-20151104.zip from Totolink official site. So, I unpacked downloaded ZIP, started to upgrade the TOTOLINK-A850R-V1.0.2-B20151104.1609.web firmware from web admin panel, where the web form counted from 90 till 1 sec, after that page has been reloaded, I waited few more mins, and ... I figured out that my upgrade failed, with next "achievements":

• I cannot open the web admin panel http://192.168.1.1 from web browser anymore,
• both 5G and 2.4G WiFi do not work anymore, althought LAN/WAN works, i. e. my routed is not completely bricked,
• with using USB-to-RS232 TTL UART PL2303HX Auto Converter adapter I can reach RealTek bootloader console.

So,

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$ sudo apt-get install asciidoc xsltproc
$ git clone https://github.com/bitcoinbook/bitcoinbook.git
$ cd bitcoinbook
$ wget -O ./images/warning.png http://www.iconsdb.com/icons/download/black/warning-5-64.ico
$ wget -O ./images/note.png http://www.iconsdb.com/icons/download/black/note-2-64.ico
$ wget -O ./images/tip.png http://www.iconsdb.com/icons/download/black/seo-tips-2-64.ico
$ a2x -f epub book.asciidoc --icons-dir=./images --resource=./theme/epub -d book -L
$ ls -la book.epub

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System:    Host: yep Kernel: 4.10.0-38-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.6 (Gtk 3.18.9-1ubuntu3.3) dm: lightdm Distro: Linux Mint 18.3 Sylvia
Machine:   System: LIVEFAN (portable) product: LIVEFAN v: Default string
           Mobo: INET model: P313R v: Default string
           Bios: American Megatrends v: YEPOM10x.8.WP313R.NHNAUHL01 date: 10/09/2017
CPU:       Quad core Intel Celeron N3450 (-MCP-) cache: 1024 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 8755
           clock speeds: min/max: 800/2200 MHz 1: 988 MHz 2: 998 MHz 3: 953 MHz 4: 992 MHz
Graphics:  Card: Intel Device 5a85 bus-ID: 00:02.0 chip-ID: 8086:5a85
           Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa)

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... in steps below:

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1. Why is Rust the Most Loved Programming Language?
2. What is Rust and why is it so popular?
3. ... The Rust implementation is simpler, shorter (in lines of code), faster, and smaller (in bytes of Flash) than my heavily-optimized C++ version ...
4. ... Prefer Rust to C/C++ for new code ...
5. Why Rust?
6. MySQL vs CockroachDB vs TiDB (Go + Rust): "TiDB has a competitive edge over the others"
7. Which enterprises/projects are using RUST?
8. [Holochain-Rust Architectural Overview](https://github.com/holochain/holochain-rust/blob/develop

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First steps on Firecracker, a lightweight virtualization solution for serverless computing

Table Of Contents

• Table Of Contents
• General
• Prerequisites
• On 1st Console
• On 2nd Console

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Armbian 20.11.10 Bionic minimal (Armbian_20.11.10_Bananapim64_bionic_current_5.10.4_minimal.img file with 809500672 bytes size) on Banana Pi M64 mini single board computer (SBC) during first power on:

➜  ~ ssh root@bananapim64
root@192.168.1.190's password:   <- 1234 by default
 ____  ____  _   __  __  __   _  _   
| __ )|  _ \(_) |  \/  |/ /_ | || |  
|  _ \| |_) | | | |\/| | '_ \| || |_ 
| |_) |  __/| | | |  | | (_) |__   _|
|____/|_|   |_| |_|  |_|\___/   |_|  

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Armbian 21.02.3 Focal with Linux 5.10.21-sunxi64 distro on Banana Pi M64 (BPI-M64) SBC (http://ix.io/3lLD).

What does not work still:

1. Bluetooth

bananapim64:~:# bluetoothctl
Agent registered
[CHG] Controller AA:AA:AA:AA:AA:AA Pairable: yes
[bluetooth]# devices 
[bluetooth]# show

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Videoconferencing: installation and starting up of Janus WebRTC Server @ elastic101 (CentOS 7)

General

Janus WebRTC Server

Installation

[root@elastic101 janus]# yum --skip-broken install jansson-devel openssl-devel libsrtp-devel glib2-devel opus-devel libogg-devel libcurl-devel pkgconfig gengetopt  libconfig-devel libtool autoconf automake libsrtp-devel.x86_64 libwebsockets-devel.x86_64 git
[root@elastic101 janus]# yum install libmicrohttpd-devel jansson-devel    openssl-devel libsrtp-devel sofia-sip-devel glib2-devel    opus-devel libogg-devel libcurl-devel pkgconfig gengetopt libconfig-devel libtool autoconf automake

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Videoconferencing: installation and starting up of mediasoup WebRTC Server @ devops4 (CentOS 7)

General

mediasoup: Cutting Edge WebRTC Video Conferencing

Installation

[root@devops4 mediasoup]# V=14.15.0 && mkdir /usr/local/nodejs-v${V} && cd /usr/local/nodejs-v${V} && wget https://nodejs.org/dist/v${V}/node-v${V}-linux-x64.tar.xz && tar xvf *.xz && rm -f node-v14.15.0-linux-x64.tar.xz && ln -s node-v14.15.0-linux-x64/ node
[root@devops4 local]# cd /usr/local/bin/ && ln -s ../node/bin/node && ln -s ../node/bin/npm && ln -s ../node/bin/npx