If you want to setup a ssl-certificate with multiple subdomains(of the same domain), you’ll have to generate a certificate with alternative names. We can achieve this using some parameters in our openssl.cnf…

rbenv is a nice light-weight tool to switch between different ruby-versions. It’s cool because we can also create a directory with a ruby-installation in it and install all our modules inside this installation-directory. In that way we don’t have to mix our system-ruby-installation with some gem-modules.

Let’s assume we have a workstation behind a firewall(NAT) and this workstation isn’t directly reachable from internet. If we want to connect to this workstation from outside, we have to do some tricky things. SSH has an option to create reverse-tunnels. We can connect from this workstation to any ssh-server in internet and we can use that connection to to get back to the workstation.

Until now the button for the rss-feeds on this blog was hard to find and the rss-feeds itsef contained all the content of each blog-entry. Now the rss-button is on top of the blog and the feeds contain only the titles of each blog entry. I hope that motivates more readers to make use of them.

Btrfs is supposed to be the “better filesystem”. It is easy to use and has a nice feature-list. Since I had some troubles with a raid1 using mdadm in the past, I will try to turn my private raid-array in a btrfs. In this article I will not post the mdadm-commands(and lvm2 commands)…

Many programms(like chat-clients) use libnotify for telling the user that a new message has arrived. If a notification-daemon is running, a message will appear on the desktop. Most common desktop-environments have any notification-daemons preinstalled. Those services just print out messages for empty batteries or incomming chat-messages or so on.

A very lightweight notification-daemon for example is dunst.

Suicide Linux is a devilish modification for Linux-Systems, where “rm -rf /” is executed whenever the admin types an incorrect command. There are Debian-Packages to install it

When I get up in the morning I start my Raspberry Pi(OpenElec installed) and listen to the local radio stations. It would be awesome if my pi automatically plays my favourite station after booting. That’s why I played a bit with the MediaCenter Kodi.

Summer is almost over and so is my summer-break. I am back again

This(https://automatetheboringstuff.com) is a nice (online)book about automation using python with very useful examples