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Changing The Background Of All Desktops On Mac OS

On Mac OS it is not possible to change the desktop background for all desktops at once. Instead, one has to manually configure the background on every single desktop which is quite annoying. I have written a little AppleScript which …

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Network Monitoring With A Bash Script

To perform some basic network monitoring tasks without installing any software like Nagios, you can just run a bash script on your workstation. I have written a little script that checks my hosts by periodically sending pings and port checks. …

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Installing INF Driver Packages For Disconnected Devices

On Windows 7, drivers (in *.inf format) can be added to the driver store using the built-in pnputil command-line utility. The command-line must be started with administrative privileges. pnputil -a driver.inf See the Technet Documentation for further information.

Installing Raspbian & Raspberry Notes

Installing Raspbian on the Raspberry PI using MacOS Download the Raspbian image from http://www.raspberrypi.org/downloads and extract it. On a Macbook Pro with an integrated card reader the image can be copied to an SD card as follows: Insert the SD …

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Basic OpenLDAP Installation & Configuration

I’m not a huge fan of LDAP because I don’t like the handling of it, but if a directory service is needed it’ll most probably be an OpenLDAP, so sometimes one just has to deal with it. I’ll use this …

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How To Reduce The Size Of VirtualBox VMs

(Updated 2018-10-01) If you work with dynamically sized disk images in VirtualBox, you will notice that the image size increases over time as you’re working with the VM, but also that the size will not decrease if you delete files inside it. …

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Deleting WLAN Profiles on Windows 8

Windows 8 doesn’t have a graphical user interface for managing WLAN profiles. Windows XP and 7 had one and it is beyond my comprehension why Microsoft would remove such a useful tool. With the command-line however, it is still possible to …

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Data Recovery With Foremost & Scalpel

Foremost is a small, easy to use tool that can recover deleted or lost files from storage devices and disk images. It has built-in support for the following filetypes: avi bmp dll doc docx exe gif htm jar jpg mbd …

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DD-WRT and SSH Tunneling

Enabling the SSH daemon on your DD-WRT home router can be very useful because it allows you to make use of SSH tunneling. By using an SSH tunnel you can send any desired traffic through this tunnel to your home …

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Testing A Network Connection with Iperf

Iperf is a nice little tool to measure networking performance/bandwidth. You need two computers for this. One is acting as the server listening for incoming connections. The other one is the client that connects to the server. If the connection …

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