How to Add new CSS or JavaScript code in MediaWiki?
If you ever want to add a new CSS or JavaScript code in MediaWiki, then here’s how you can do...
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[Solved]: Perl Error – Undefined subroutine &Scalar::Util::blessed
I have been using OpenCA for managing a certificate authority and only to be shocked when it broke last night. All of a... -
What is CloudSim Framework and How to use it with NetBeans IDE?
If you are a student or a researcher working in Cloud computing domain, then you must have heard about CloudSim... -
What’s the difference between die and exit functions in PHP?
One of my student asked me couple of questions – what is the difference between print and echo (which I... -
How to fix Python Installation Error while loading shared libraries: libssl.so.1.0.0? [Solved]
Question: Thanks to the guide on How to compile and install Python with OpenSSL Support. However, the installation failed with an... -
Python Error – urllib2 URLError: urlopen error unknown url type: https [Solved]
Question: I got this error urllib2.URLError: <urlopen error unknown url type: https> while installing packstack. After checking the program, I understood that... -
How to Install Multiple Versions of Python (2.7 and 3.5) Without breaking System tools and Create Isolated environment using Virtualenv?
Today, I’m going to tell you how to install Python 2.7 and 3.5 versions on CentOS 6.4. And we are... -
Error: md5 validation failed for PyYAML-3.11.zip possible download problem? [Solution]
Question: I was installing Packstack and was hit with an error “error: md5 validation failed for PyYAML-3.11.zip; possible download problem?“.... -
Upgrading PHP 5.x to PHP 7.0 on CentOS/RedHat server using Yum
From our earlier posts, you would have seen How to upgrade to php-5.5 using remi repository. Today we shall see... -
PHP Startup Error : Unable to load dynamic library, wrong ELF class: ELFCLASS64 [Solved]
PHP thrown this error PHP Warning: PHP Startup: Unable to load dynamic library wrong ELF class: ELFCLASS64, while installing Composer on... -
How to Install Composer, the PHP Dependency Manager?
Composer is a dependency manager for PHP, which allows you to require all dependant libraries for a particular project. In... -
Python Installation Error – Sorry: UnicodeError: escapes not supported can’t load unicodedata module [Solved]
Question: I was compiling Python from source and during ‘make install’, the installation failed with an error message as Sorry:... -
Preug Command – SyntaxError: Missing parentheses in call to ‘print’ – Solution
Question: I get SyntaxError: Missing parentheses in call to ‘print’ when I invoke/execute ‘preupg‘ command on my CentOS machine. What... -
What is the Difference between Comma and ‘as’ in except statement for Python
Question: I’m quite new to Python programming. I was trying to learn try, except statements in Python with a simple... -
How to Compile and Install Python with OpenSSL Support?
Your Python installation does not support SSL? You need to compile it again after editing Setup.dist file located in the... -
How to Fix ImportError: No module named virtualenv in CentOS?
I was trying to compile Letsencrypt package on my CentOS machine and landed up on this error message – ImportError: No... -
Python Installation Error – Ignoring ensurepip failure: pip 7.1.2 requires SSL/TLS [Solved]
I was trying to compile Python from source – the steps involved are configure, make, make install and luckily everything... -
How to Fix Python Fatal error: Py_Initialize: Unable to get the locale encoding [Solved]
I had successfully compiled Python3.5 from source. But when I execute ‘python3.5‘ command, I get an error message as “Fatal Python error:... -
How to Compile and Install Python3.5 and Python-pip from Source on CentOS
Hi, I recently followed your guide to install Python-pip on my CentOS Box. As you had told in the article,... -
How to Check If a Visitor to your Website is from a Mobile or PC in PHP?
Ever want to check if a particular visitor to your website is from a mobile device or desktop using PHP? then...