Upgrade to Calibre 2.0
It is suddenly 2.0 now. I am still using 1.4x. It has been a year since calibre 1.0 and lots has changed in calibre-land. The biggest new feature is an e-book editor, capable of editing ebooks in both the...
Author: David Yin
How to check which program use the port 80 on Ubuntu
It is a general command to check which program is using port 80. And also known the PID of this process. Then to force stop it and release the port 80 to other program. To get more details of...
How to show line number in vi text editor
I use putty as a terminal to connect my remote server through ssh. Vi is my favorite text editor in it. How to display line numbers along the left side of the editor? Enter following command while using vi text...
Update Kindle Touch firmware to 5.3.7.1
Here is the way to update Kindle Touch firmware from 5.3.7 to 5.3.7.1 The upgrade package is 114M. A big file. Following is the copy from Amazon official site. Before you perform these steps, make sure you determine your software...
Electric Cars Charge into the Future
It is a new infographic guide to the world of Electric Cars. As a consumer, we are always thinking about total cost of ownership, including price of car, cost of insurance, cost of gas consumption or electric usage. This new...
Unversity of Florida provides Social Media Master Degree
Fifteen years ago, most people couldn’t even imagine how much we would come to depend on the Internet and social media such as Twitter, Facebook, LinkedIn, Google+, YouTube, Tumblr, Vimeo and all the others available. Now almost everyone is so...
Android 4.4.4 OTA is avaiable for Nexus 7 wifi
My Nexus 7 (2013) was just updated to Android 4.4.3 two weeks ago. It is Android 4.4.4 now. Followed the prompt, the system is safe to upgrade. Be sure, the batter is full charged or with usb power connected. ...
Logitech MK360 Wireless Keyboard Mouse combo
I bought Logitech MK360 combo in Costco store. It is less than $30. Includes three items: Logitech K360 wireless Keyboard Logitech M215 wireless Mouse Logitech Unifying USB receiver Here are some pictures I took. Box.
Linode annouced $10 Plan
It is the first time Linode announced $10 plan in the past 11 years. They call it Linode 1G Linode 1G – a $10/mo ($.015/hr) entry into our Linode plan lineup. This new Linode runs on the same 40 Gbps network,...
Update Fitbit Zip firmware 5.86
To update Fitbit Zip firmware, click the icon of Fitbit Connect on the task bar. Then click the Check the device update link. It may ask you email and password to log in your own account. If it find updates,...
Wifi 5Ghz connection improvement on Android 4.4.3
One of the biggest improvement on Android 4.4.3 release is Wifi connection. Especially at 5G band. My router is located in living room. When my Nexus 7 connected with Wifi 5G in the same room, the signal strength is very...
June Software Update
Here is a list of the software I got upgrade. Microsoft Windows 7 Chrome： v 35.0.1916.153 m Firefox: v 30.0 Filezilla: v 3.8.1
What’s New of Android 4.4.3 on Nexus 7
The Android 4.4.3 KitKat update for Nexus 7 is about 73.9MB in size and brings performance improvements, stability and bug fixes. Notably, the Android 4.4.3 KitKat update is an incremental update from Android 4.4.2 KitKat and brings security enhancements and...
Android 4.4.3 OTA is avaiable for Nexus 7 wifi
Yesterday, I got the system update notice on my Nexus 7. Then touch the bar to download the new system. Touch the Download button A few minutes later. the system will ask for restart. Confirm it and the device...
Proftpd Login problem with 530 error
I installed a ftp server, Proftp on a developing virtual system. It is on Centos 6 64bit. Install Proftpd with yum command. When I use ftp client software to connect the ftp server, I got following error. Response: 220 FTP...