If you're behind of a proxy server and the IP address has changed (or proxy it's a new node in your network topology) then probably when you're trying to update your binaries then you'll get a list of errors.
[bash]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/i18n/Translation-en_US Unable to connect to 192.168.120.240:3128:
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/i18n/Translation-en Unable to connect to 192.168.120.240:3128:
[/bash]
This happens because you're unable to connect to Ubuntu mirrors. In order to fix this issue you have to edit apt.conf file settings.
[bash]
root@my-server:~# vi /etc/apt/apt.conf
Acquire::http::Proxy "http://192.168.230.99:3128";
[/bash]
Ubuntu – How to fix update errors for a server behind of a proxy
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Several C++ singleton implementations
This article offers some insight into singleton design-pattern. The singleton pattern is a design pattern used to implement the mathematical concept of a singleton, by restricting the instantiation of a class to one object. The GoF book describes the singleton as: “Ensure a class only has one instance, and provide a global point of access […]
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SubclassWindow() method issues in projects base on MFC Feature Pack
The Problem Trying to paint a background image into client area of a MDI application build in VC++ 6.0 to VC++ 2005 IDE it’s not a difficult task. In case you need, you can find easily good references. For instance, there are two references from Microsoft (KB129471 and KB103786) and one I prefer: a FAQ […]
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Some experiences with the last world-wide WordPress brute force attack
As you most probably know, this website uses WordPress. Last Saturday, trying to access the site admin area I was facing with an error generated by too many redirects. Having other things to do, I ignored it for that moment. Later a friend of mine published on his website some information about an existing world-wide […]
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HTML files generation using XML and XSLT with Microsoft XML DOM API
This short tutorial shows how easy it’s to generate reports in HTML pages using Microsoft XML DOM API together XML and XSLT. XML (Extensible Markup Language) became a universal standard of encoding data in a format that is both human-readable and machine-readable. It’s widely used in business applications and even Microsoft Office uses it into […]
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Getting Table’s indexes experiences – workaround
Trying to get table indexes information in SQL Server 2012 I identified a strange situation within a specific method that I was using so long but it was not acting as expected in one situation.
Usually, I got the right information about indexes but in one situation I encounter a strange behavior. It's about having a clustered index into a scenario.
I have a table that contains two indexes referenced to some fields: IndexField_1 and IndexField_3 mapped over int, NULL fields. When IndexField_1 is Non-Unique, Non-Clustered and IndexField_3 is Clustered index I get the right information.
But if the index IndexField_1 is Clustered and the IndexField_3 is Non-Unique, Non-Clustered I get no information about IndexField_1 index (eg. szIdxName and szIdxColName are "" and their length is -1 that means SQL_NULL_DATA). Within while loop, with the next iteration I get correct information about the second index IndexField_3.
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Experiences with Adobe Acrobat/Reader Plug-ins
I wrote this document after a challenging experience I had recently within an Adobe Acrobat/Reader plugin creation. Even if the Adobe’s SDK it’s nicely documented within PDF files, one of the major reason that determined me to write this article was the frustration I got sometimes when, for instance, trying to see “why the plugin […]
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The Chameleon Pathnames
The title might be as well “When the pathname is not what it has to be”. The experience of developing plugins for Adobe Acrobat/Reader reserved me different surprises, surprises that made the task more challenging. One of the biggest surprise I had was the impact of the Adobe’s Cloud idea over the Acrobat’ API within Acrobat […]
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apt-get and the static IP challenges within Raspbian OS
This is the story of my first experiences with Raspberry PI 2 card computer. Back in March I bought a new toy, a Raspberry PI 2. I have downloaded the Raspbian OS ISO image, wrote it on the microSD card and the toy was up and running. As most probably you already know, the default package […]
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Finally, I got Windows 10
This is a story of how I got over a blocking situation within some Windows 10 OS installs on my Samsung laptop.
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The First Hackathon Experience #HackTM2016
Some inside from my first hackathon experience, the #HackTM2016 from Timisoara.
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Ubuntu – How to fix update errors for a server behind of a proxy
If you're behind of a proxy server and the IP address has changed (or proxy it's a new node in your network topology) then probably when you're trying to update your binaries then you'll get a list of errors.
[bash]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/i18n/Translation-en_US Unable to connect to 192.168.120.240:3128:
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/i18n/Translation-en Unable to connect to 192.168.120.240:3128:
[/bash]
This happens because you're unable to connect to Ubuntu mirrors. In order to fix this issue you have to edit apt.conf file settings.
[bash]
root@my-server:~# vi /etc/apt/apt.conf
Acquire::http::Proxy "http://192.168.230.99:3128";
[/bash]
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Process Status Analysis – the first steps
I am pleased to announce my first cross-platform and open source project, the Process Status Analysis tool, available on GitHub.
The Process Status Analysis (psa) is a command line tool that offer some Operating System processes analysis features:
- Get all processes loaded in memory information
- Get process only used memory
- Print processes tree
- Top most “expensive” processes
- Redirect output to a file
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openSSL vs. vcpkg – some strange experiences
Some unexpected experiences caused by the fact the vcpkg C++ package manager is still based on OpenSSL 1.0.2.
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More Pages to Explore .....
