How to find out the serial number of a specific disk
To find out the serial number of a disk I mostly use one of the following commands:
/sbin/udevadm info --query=property --name=sdb | grep ID_SERIAL
## or
hdparm -i /dev/sdb | grep SerialNo
Suricata Ruby-Gem
I wrote a Ruby-Gem for suricata. It offers classes to parse suricata-logs and ships with a nagios-plugin
Creating screenshots using imagemagick
Normally I don't use the "print"-key on my keyboard. I woud like to use it to quickly create screenshots. So I'll map the following command to my .fluxbox/keys-file:
sleep 5s && import /home/dr/Screenshots/`date +%F-%T`.jpg
After 5 seconds of idle-time this command will activate a screenshot. After the cursor changed I can select a window or a region on my screen. The screenshot will be saved with it's date and time under /home/dr/Screenshots.
LXC: Problems with the ubuntu-template in Debian Jessie
I tried to create an Ubuntu-container on my Debian Jessie Server and I got the following error-message:
Crashing systemd
I can really recommend to read this article about crashing systemd. I am still wondering why all the distris changed to systemd...
How to access a Virtualbox VDI-Disk
Today I wanted to copy a disk-image to a Virtualbox-disk(VDI) using dd. In this article I am going to describe how I managed to access the disk from the Linux command-line, copied the image and mounted a VDI-disk-partition
HackADay: Controlling computers and stuff with the mind
I am very slothful. I let computers do my work. That's why I became a sysadmin.In this article I am going to describe how I lifted up my lazyness to the next level by triggering a command with my mind to install a new virtual machine with: MariaDB, Nginx and Wordpress.
GNU parallel
GNU parallel is an amazing command line tool for executing jobs in parallel using one or more machines. It has a lot of features and therefore a lot of options. Fortunately the manual page is full of examples.