Category: Linux

..contributing to IT in London since 2002..

How good are the abstraction layers?

Choosing the features based on the lowest common denominator of X number of database systems is not the right approach in implementing an ORM! https://github.com/laravel/framework/pull/8400 This forces us to question the value of database abstraction layers and other abstraction layers in general. If one database system does not support a feature, the abstraction layer developer …

Online Relocation: Moving from 1and1 to AWS Route 53 and Digital Ocean

Even though it is time consuming, I think we have to reconsider our web hosting options regularly. If our current provider does not renew its products and services, together with their pricing structure (Amazon does, 1and1 does not), they become less competitive. After long research, I have decided that AWS has confusing pricing structure and …

PostgreSQL and Node.js – 100% JavaScript Adventure

This is a log of every step I will take to create a 100%-JavaScript application back to front. Hardware: Windows 7 64bit Home Edition ASUS laptop with Intel P6100 CPU @2.0GHz, 4GB RAM, 320GB HDD Oracle VirtualBox 4.2.12 Ubuntu 12.04.2 – Long term support Downloaded 32bit ISO image – laptop does not support 64bit virtualisation …

Installing SVN Server on Fedora Linux

I used Sun Virtual Box before. I’ve just installed Oracle Virtual Box on my old Vista to try Fedora 14. All I had to do was to download x86_64 Network Install CD and go through a minimal installation. The first hiccup was I needed to eject CD (ISO image) of the virtual machine (VM) when …

Creating a CV indexing facility using Oracle Text

Recently, I have struggled to get Oracle Text working on Linux. It was supposed to be a simple addon based on a very simple idea: + already installed Apache 2.2, PHP 5.3, Firebird 2.0; which are working fine + install Oracle 10g Express Edition + create a simple table to store candidate ID and document …

Emergency check on command-line for Oracle XE

Go to your Oracle binaries folder and export environment variables, if they are not set already. Then, run SQL*Plus command line utility with option /nolog .

I hope this helps some beginners.

Setting up a web application on CentOS (continued)

Before continuing the rest of the installation process we started (/wp/index.php/2009/07/setting-up-a-web-application-on-centos-5-3/), I must mention my appreciation for the “yummy” tool Linux developers provided: yum (.. an automatic updater and package installer/remover for rpm systems). I love using webmin (.. a web-based interface for system administration for Unix) as well. The other day I only clicked …

Another clumsy application from Microsoft: cisvc.exe

Also known as content indexing service, this process is part of Windows operating system, and it is supposed to index the files on the drive(s), which should provide faster file search and access using the indexing service catalog. Instead of speeding up your machine, it sometimes slows it down, which is probably because some dummy …

Tape backup on CentOS

In this occasion, we have a PHP/Firebird application. We had to backup the database and the code (which includes PHP, HTML, CSS, Javascript files as well as user documents uploaded into a folder). We have created a folder /mybackup/ and created a bash script backup.sh to do the following, using nano command line editor. We …

Setting up a web application on CentOS 5.3

Ingredients for our web application are Apache HTTP Server 2.2, PHP 5.2, Firebird 2.1and Oracle 10g Express Edition. Like in any IT project, not everything goes according to plan and there are so many pitfalls; some of which are: Repositories Linux Firewall SE Linux Permissions Using the package manager (Yum) to add, remove and upgrade …