Traditionally, we use dhclient to release and renew DHCP lease on Linux. It probably still work with modern Linux distros nowadays. However, most distros come with NetworkManager which provides nmcli command line interface to manage networking. Here’s how to renew DHCP lease using nmcli performing on my machine. Your output when running these commands could be different. First, let’s list the connections managed by NetworkManager. # nmcli con NAME UUID TYPE DEVICE virbr0 2c2c7c4f-15e9-439b-be1d-e1d0131fb41c bridge virbr0 Wired connection 1 5c9000c5-2635-4b09-90d7-71c3783c6626 802-3-ethernet enp0s25 enp0s25 70ee0b94-8341-46ec-953d-f2c3ca34285a 802-3-ethernet -- virbr0-nic aafaa95e-6ced-4ea9-bd4f-7c8d10fb51b6 generic virbr0-nic Next, we can find out the current IP associated with enp0s25 by running command: ...

ថ្ងៃ​នេះ ខ្ញុំ​បានទទួល Odroid-C2 ដែល​បាន​ទិញ​ពី​ Hardkernel កាលពីអាទិត្យ​មុន។ OS ដែល​អាច​ដើរលើ​វាបាន ​ក្នុង​ពេលនេះ​​ មាន​តែ Ubuntu Mate 16.04 LTS ដែល​ជាបេតា នៅឡើយ។ Time zone ដែល​មាន​ស្រាប់ជាដើម​គឺ EST (American Eastern Standard Time)។​ ខ្ញុំ​ត្រូវការ AEST (Australian Eastern Standard Time) ព្រោះខ្ញុំ​នៅ​ស៊ីដនី។ នេះ​ជាខំម៉ាន​ដែល​អាចប្តូរ Time zone បាន ដោយ​វាយ ពី ធើរមិណល់។ មុន​ដំបូង ឆែក​មើលមុនសិន៖ odroid64:~# date Fri Mar 11 08:13:04 EST 2016 ប្រើខំមាន នេះ​ដើម្បី​ប្តូរ​ time zone៖ odroid64:~# dpkg-reconfigure tzdata ជ្រើសយក​ប្រទេស រួច​ទីក្រុង។​ នេះជាលទ្ធផល៖ Current default time zone: 'Australia/Sydney' Local time is now: Sat Mar 12 00:13:57 AEDT 2016. Universal Time is now: Fri Mar 11 13:13:57 UTC 2016. Reference: ...

If you see a similar error message as the following when running Ansible on a Fedora 23 machines, there is an easy fix. It is very likely that a package “python2-dnf” is missing. This package is required for Python script to interact with DNF package manager. There is a good article available at fedoramagazine.org about running Ansible on Fedora 23. (I only found this later, and it’s very informative.)

After installing Mate desktop environment on a fresh FreeBSD 10.2 box, mouse was not working. This is what I have in my /etc/rc.conf: ... moused_enable="YES" hald_enable="YES" dbus_enable="YES" Some suggests that the order of hald and dbus to be swapped around. I tried that, and it still didn’t work. A bit of more Googlings, I found out a working solution [1]. I need to install: xf86-input-mouse. Here’s how I did it: # portmaster x11/drivers/xf86-input-mouse And that was all required. If your keyboard is not working in Xorg, you might want to also install xf86-input-keyboard. ...

Not too long ago, upgrading firmware on STM32F4-Discovery board required it to be performed on a Windows machine. That annoyed the heck a lot of people, myself included. There’s a very good news for Linux and Mac users. Now, you can do it from your favorite OSes. Since I’m so excited about this, here’s a short article on how to do just that. First download “STSW-LINK007” from <www.st.com/web/en/catalog/tools/PF260217>. At the time of this writing the file is called: stsw-link007.zip. ...