Check if ABAP program runs in production system

SAPThere are lot of cases where you need to run a whole program or its piece in development or testing environment only and you want to avoid running it in production. Or vice versa. In the following article I’ll show you a construct which will check if you’re running on production system or not. Continue reading

Install Subversion and WebSvn on Ubuntu Server

UbuntuVersion control of your documents and code should be one of your first and major TO-DOs if you intend to develop application or website and you plan to maintain it during time with possibility to view changes made during it’s life cycle. Continue reading

How to Create a SSL Certificate on Apache for Ubuntu 12.04

About Self-Signed Certificates


A SSL certificate is a way to encrypt a site’s information and create a more secure connection. Additionally, the certificate can show the virtual private server’s identification information to site visitors. Certificate Authorities can issue SSL certificates that verify the server’s details while a self-signed certificate has no 3rd party corroboration. Continue reading

Ruby on Rails on Ubuntu 12.04 LTS

About Ruby on Rails


Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications.

Ruby on Rails does take a little while to install on a virtual server, but luckily there are a lot of helpful tools to make this process as easy as possible. Continue reading

How to Install and Configure Dropbox on Ubuntu Server 12.04

Dropbox is the best free cloud service and extremely easy-to-use tool for sharing files and syncing them between computers, and you can also use Dropbox to back up files and access them from other computers and devices (including from your Android Smartphone, android tablets and iPad or iPhone, with dedicated Client apps for each of those devices). How to make dropbox features and services available on ubuntu server?

in this post I would like to show you step by step How to Install Dropbox on Ubuntu Server 12.04 and Sync up to your Dropbox Account. Lets start it. Continue reading

How to subdomains on Apache with mod_rewrite

Because I like to play with a lot of projects and code, I create subdomains for oprsteny.cz for almost every project. Instead of going through the hassle of creating a CNAME or A record for every subdomain, creating an Apache vhost file and enabling it and creating the necessary directory structure, I figured there’s an easier way to do so. Continue reading

Recursively chmod only directories or files

Ever come across the problem of needing to chmod a directory and its many, many, sub-directories, but you don’t want to touch any of the files? Maybe it’s the exact opposite, or you need to recursively change the permissions on only files with a specific extension. Well I had a similar problem with my web server settings. Continue reading

How to check which process is listening on which port

Here’s a few built-in commands and how to guide that can help users to find out and identify which application or process that is already using, opening and listening on port 80 or 443 on the Winodws operating system such as Windows Vista, Windows XP, Windows 7, Windows Server 2003 and 2008. Continue reading