The EMQ broker is one of the most interesting MQTT brokers. EMQ is fully open source and licensed under the Apache Version 2.0. EMQ implements both MQTT V3.1 and V3.1.1 protocol specifications, and supports...
In the post Running Swift on Ubuntu Server (on VirtualBox) we installed swift on an Ubuntu Server 15.10 installed in VirtualBox virtual machine and then we have compiled our first swift program, naturally it...
VirtualBox, kernel headers not found. (But they are in place) while installing VirtualBox Guest Addition
What are VirtualBox Guest Additions? They consist of device drivers and system applications that optimize the guest operating system for better performance and usability. To install them in Ubuntu you have to mount the...
One of the first questions I receive when I'm doing courses about QT Creator is "Hey, how can I printout debbugging info in QT Creator?" It seems a silly question, but I replied this question...
Activating ssh server is a must for your ubuntu box. This howto shows the installation and setup for the openssh client and server, while you are running Ubuntu 13.10 Saucy Salamander. First of all...
Often, embedded systems works without a battery, this can generate some problems at boot time, blocking the bootstrap process:
<span style="font-size:14px;">Checking filesystems
IMAGE2: Superblock last mount time (Tue Mar 1 17:32:48 2011,
now = Thu Feb 22 11:04:29 2013) is in the future.</span>
<span style="font-size:14px;">IMAGE2: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options)</span>
<span style="font-size:14px;">*** An error occurred during the file system check.
*** Dropping you to a shell; the system will reboot
*** when you leave the shell.</span>
the e2fsck tool can be used to avoid this problem: The e2fsck(8) program...
This question sounds just a little bit strange. But for several different reasons you may want to give your personal name to the NIC adapters plugged into your Ubuntu box. For example: 1. Maybe...
I had several experiences with buildroot, it is a "simple" way to build your own embedded operating system. From http://buildroot.uclibc.org/: "Buildroot is a set of Makefiles and patches that makes it easy to...