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Tag: tips

Disable TLS 1.0, TLS 1.1 and weak certificates on IIS
  • Tips

Disable TLS 1.0, TLS 1.1 and weak certificates on IIS

  • Posted on 2022-03-162022-04-01
  • by dulare

I have written a few words about SSL certificates and modern browsers in my article back in 2020: SSL issues — how to deal with IIS and modern browsers requirements…

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A quick way to check SD card speed in Linux command line
  • Linux

A quick way to check SD card speed in Linux command line

  • Posted on 2022-02-022022-02-03
  • by dulare

I have to prepare several Raspberry Pi boards for some of our small projects. We have a bunch of SD cards we can use. I want to determine which one…

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ESP8266 and ESP32 Websockets considerations
  • ESP8266

ESP8266 and ESP32 Websockets considerations

  • Posted on 2022-01-192022-01-27
  • by dulare

Recently, one of the readers, Derrick, asked such questions in the comments: I have done client/server stuff before but am new to WebSockets, hopefully, I can ask some questions –1)…

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Python rounding issue and how to fix it
  • Python

Python rounding issue and how to fix it

  • Posted on 2022-01-052022-01-27
  • by dulare

Consider the following piece of code: The code above produces the following output: Strange, isn’t it? The values which end with “5” should be rounded up! This is a common…

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Linux: find recently updated files
  • Linux

Linux: find recently updated files

  • Posted on 2021-09-222021-10-22
  • by dulare

I want to share with you one of the useful oneliners I’m using to find recently updated files on our Linux machines. Let’s start simple: What do we have here?…

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Closing all connections to the database
  • Database

Closing all connections to the database

  • Posted on 2021-09-012021-10-21
  • by dulare

Have you tried to restore the development database when suddenly such an error occurred? In the MS SQL Server with a connection to ColdFusion, this is a common problem. ColdFusion…

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Using wget to crawl password-protected websites
  • Tips

Using wget to crawl password-protected websites

  • Posted on 2021-08-182021-10-21
  • by dulare

We are using SOLR to search pages and documents on some of our client’s websites. SOLR contains the module that is crawling sites and places the website’s contents in the…

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Basic text processing in Linux
  • Linux

Basic text processing in Linux

  • Posted on 2021-08-112021-10-07
  • by dulare

In my case, text processing is mostly reviewing logs and looking for things that are stored in them. Sometimes dig through the Git repository or trying to find a setting…

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Calculate hash of multiple columns in MySQL
  • SQL

Calculate hash of multiple columns in MySQL

  • Posted on 2021-08-042021-09-10
  • by dulare

What do I calculate the hash of multiple columns for? I’m working with API that is limiting the number of calls per hour. I don’t want to send the same…

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Complex updates using CTE in SQL Server
  • SQL

Complex updates using CTE in SQL Server

  • Posted on 2021-07-282021-09-10
  • by dulare

Are you familiar with Common Table Expressions (CTE)? Common Table Expressions are widely used to simplify queries, make them more readable and maintainable. For instance, when I want to check…

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