Author: Alex

PostgreSQL error “An old version of the database format was found” (SOLVED)

Warning: The following instructions could cause data loss. Do not run the commands below blindly, without understanding what they do. Backup database first. If, while starting the PostgreSQL service: sudo systemctl start postgresql.service it didn't work and the following message came up: Job for postgresql.service failed because the control process exited with error code. See "systemctl status postgresql.service" and "journalctl -xe" for details....

How connect to the Tor network via bridge on Linux

Some ISPs are blocking Tor. They can use various approaches, for example, block connections to all IPs of the Tor network, or by analyzing traffic and, if it is identified as belonging to the Tor network, block it. Repeaters can be used to bypass this blockage. The bridge is one of the types of repeaters. Since not all bridge IP...

How to Configure Tor to Work Through a Bridge Relay and Proxy in Windows

If you want to install Tor as a service on Windows, then you need the Expert Bundle. It can be downloaded from this page of the official website. From the downloaded archive (in my case, the file is called tor-win32-0.4.5.8.zip), unpack the Tor folder to the root of the C drive. Configuring Tor to Work Through a Bridge Relay Theory:...

How to check if my router supports IPv6

How to open a site on IPv6 The fastest and easiest way to find out if a router can work with IPv6 is to check if it can open a site with an IPv6 address. Use the service “Do I have IPv6”. This website allows you to connect to it in a variety of ways – just follow the link...

How to install Wi-Fi driver in Linux if the computer is offline

If you cannot connect to Wi-Fi because the wireless card driver is not yet installed in your Linux and there is no wired connection, then you get a vicious circle: it is impossible to install the driver because there is no Internet. There is a way out of the situation – for this you only need an Android phone. Moreover,...

Intel disabled undervolting on 11th gen Tiger Lake CPUs

Owners of new computers, as well as users updating the BIOS of their laptops and computers, may have noticed that manufacturers have a tendency to disable undervolting. 10th Gen processors ship with undervolting disabled by default. To enable it, you need to find the appropriate setting in the depths of the BIOS. If you have previous generations of central processors...

Where else to look for apartments for purchase and rent in Thailand

In the article “How to choose an apartment in Thailand to buy: the cheapest condos” I evaluated the apartments in Thailand, which are presented on the site https://www.thailand-property.com, but this is not the only site with apartments in Thailand, and the Internet is is not the only source with an offer for the buy/sell/rent of apartments. Let's consider other options...

How to block by Referer, User Agent, URL, query string, IP and their combinations in mod_rewrite

As part of the fight against the influx of bots to the site (see the screenshot above), I had to refresh my knowledge of mod_rewrite. Below are examples of mod_rewrite rules that allow you to perform certain actions (such as blocking) for users who meet a large number of criteria at once – see the most recent example to see...

How to disable autostart of programs and services in Windows

Auto-loading programs and services that you are not using is a waste of system resources. The automatic launch of a large number of programs can slow down your computer. This article will show you how to check which programs start automatically when you turn on your computer and disable those you don't need. In addition to programs, we will also...

libpcap-dev for Cygwin

When compiling programs from source in Cygwin, an error may occur containing the line “when searching for -lwpcap”. The essence of the error is that the headers of the pcap library are searched. These header files are present in the libpcap-dev package (Debian and derivatives). This package may also be called libpcap (for example, on Arch Linux). There are no...
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