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I was working on my laptop which is running Ubuntu 12.04 LTS. I was about to print some of the documents and noticed that I couldn’t find ‘Printers’ in System Settings anymore.

After digging for a few mins, found what I needed to restore.

Install the system-config-printer and it’s all good again.

So, I was playing around with some networking devices and want to monitor some stats via SNMP.

qtmib does a good job for quick reference and looking up.

In order to use the private (vendor specific) MIB, place the MIBs under

While I was browsing a certain Burmese website and downloaded a ZawGyiOne font and installed it. Then, I noticed that system wide Burmese fonts got messed up.

I installed the Font Manager but unable to find the font to uninstall.

The font is located at ~/.local/share/fonts

Remove the font by

Nowadays, most of the systems running Windows 8 support a feature called FastBoot which greatly boosts the Windows boot up time. For users who're running both Windows and Linux dual boot system, you might run into situation where you are unable to mount partitions with NTFS file system from Linux.

I have Ubuntu 14.04 LTS and Windows 8.1 in dual boot. I also have a storage partition on NTFS shared by both OS. In Ubuntu, I keep getting error saying that there is a Hibernation file from Windows and need to shut down Windows. I remember that I shut down the Windows, not Hibernate.

Fixed it by disabling the FastBoot feature in Windows Control Panel, Power Options. After that, there is no issue mounting the partition.

WriteConcern is mongodb allows developers to select how their application interacts with the database write operation and have impact on performance and data integrity.

Available modes are -

Unacknowledged

Acknowledged

Journalled

Fsynced

Replica Acknowledged

Weaker WriteConcern allows faster performance while reducing data integrity and vice versa.

I've been using Windows 8 for a while and noticed that it's connecting to the SSID which I don't want to be first priority. I have 2 Wi-Fi in my home.

1. First, list all the current profiles.

netsh wlan show profiles

2. Secondly, update the priority of the profile you wished to modify

netsh wlan set profileorder name="MyRepublic3085" interface="Wi-Fi" priority=1

3. Finally, confirm the changes made by listing all the profiles again.

Soon after I've finished the Raspberry Pi setup, I came across a problem with the keyboard layout. The default layout turns out to be "gb". So, I had to change to "us" for my environment.

pi@raspberrypi ~ $ sudo vi /etc/default/keyboard # KEYBOARD CONFIGURATION FILE # Consult the keyboard(5) manual page. XKBMODEL="pc105" XKBLAYOUT="us" XKBVARIANT="" XKBOPTIONS="" BACKSPACE="guess"

change the XKBLAYOUT value to "us" from "gb" and reboot the box.

Starting from Java SE7, underscore character can be used between the digits in numeric literals. It can be used like a comma in writing.

class NumericalDelimiter { public static void main(String[] args) { int price = 300_000; System.out.println("The price is : " + price); } }

Database connector for sqlite3 is shipped with the web2py package. If you already have a sqlite local data storage, you can specify the directory with the 'folder' parameter of DAL and establish connection. For example, database 'emp.db' located under '/usr/src/data/' has table 'employee'.

sqlite> .schema employee CREATE TABLE employee ( id integer, name varchar(100), department varchar(1000), primary key(id) );

In db.py code

dbemp = DAL('sqlite://emp.db',folder='/usr/src/data/') dbemp.define_table('employee', Field('name','string',label='Employee Name'), Field('department','string',label='Department'), migrate=False)

What if superman needs a tooth extraction?