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Total: 104

mac os x virtualbox | 2015-06-06

Mount SD Cards within VirtualBox on Mac OS X

Sometimes you need to mount your SD cards inside a VirtualBox machine to work wi ...

Lothar Braun
8 min read
linux ghost | 2015-05-26

Ghost Blogging: Move from SQLite to Postgres or MySQL

After moving to the ghost blogging platform, I started running the system with SQLite as backend. Now I wanted to move from SQLite to Postgres. A Google search brought up articles like this one, which try to migrate the content of the database. Scripts are used to dump the SQLite content to an export file format, to change the SQL syntax ...

Lothar Braun
5 min read
linux nginx | 2015-05-17

Redirect Parts of a Website to HTTPs with Nginx

Sometimes you have certain parts of a web page that should not be accessed via HTTPs and not with clear-text HTTP. Examples for such parts of the website can be management areas of your site, which require you to be authenticated. If you have such parts of the site, then you can create a redirect that applies only to specific directories ...

Lothar Braun
2 min read
raspberry pi mac os x | 2015-05-10

Create a TimeMachine Backup Storage on the Raspberry Pi

TimeMachine is the way to backup your data on Mac systems. The backup and restore procedure work nicely out of the box with very little hassle involved. I used to backup my data on a local USB disk for some years. However, backups to a USB disk require you to connect the disk, otherwise no backups will be performed. Apple will sell you t ...

Lothar Braun
9 min read
linux raspberry pi | 2015-05-03

Raspberry Pi: USB 3.0 Disks do not appear as device nodes

The Raspberry is a nice cheap platform that can be used for many different purposes. However, the fact that it is a cheap platform means that all kinds of hardware-related problems can occur. One common problem is related to USB devices. If you connect to many devices via hubs, or devices that have high power requirements, then these devi ...

Lothar Braun
4 min read
linux fritz!box | 2015-05-03

Static IPs and DNS Names for Devices in your Home Network

Devices from AVM are very popular in Germany. Several ISPs are happy to sell you a Fitz!Box device to connect your home to their network. The FRITZ!Box is a Linux-based device, that allows for easy configuration through its Web interface. It runs a DHCP server that will automatically assign IP addresses to newly connected devices. If yo ...

Lothar Braun
4 min read
linux ghost | 2015-05-02

Importing old content from Blogger to Ghost

My old blog was hosted on blogspot. When I decided to host this blog myself and to move to the Ghost platform, I had the need to move the old content from blogger to Ghost. Google, who owns Blogger, provides tools to export your data from the platform. Information on how to export the data can be found here. Ghost provides an interface ...

Lothar Braun
5 min read
| 2015-05-02

New Blog Location

Starting from today, my blog moved from http://const-cast.blogspot.com to this new location. The blog now runs on my own infrastructure and is powered by the ghost blogging software. Google allows to export your old data from the blogger platform, and I’ll import the old posts in the following days.

Lothar Braun
1 min read
| 2014-04-12

FreeBSD: make config does not show config option

Today was update-time for my FreeBSD machines. editors/vim required some changes to the options. However, “make config” did not open the usual config dialog. The config dialog requires ports-mgmt/dialog4ports to be installed. While the port was installed on my machine, it also was due to be updated. The stale version of dialog4ports pro ...

Lothar Braun
1 min read
| 2013-05-02

Setting up Flow-Inspector on Your System

Some time ago, our group at TUM created a web frontend that allows users to visualize network flow data. It’s based on Javascript and employs the D3Js library, which allows for dynamic rendering of arbitrary data. We used it to create some visualizations like this one: If you’re interested in how the system works, then have a look at ...

Lothar Braun
21 min read
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