Install Canon MF220 printer in Ubuntu

Copy Linux driver pack from CD with printer or download from Canon website.
Extract the package in home folder.
Enter into the package folder using Terminal,

sudo su
cd Linux_UFRII_PrinterDriver_V320_us_EN

Make the file executable,

chmod -R 777

Run the install file,


Open printer admin page in a browseer http://localhost:631/admin
Add printer and change settings. 

Edit crontab with gedit or nano

Editing crontab with vim is may feel difficult for basic Linux users. Users can open crontab with other text editor like gedit. Apply following command to open crontab with gedit.

env EDITOR=gedit crontab -e

Installing DSpace 5.x on Ubuntu 14.04 LTS

Installation of prerequisite applications

Open  Applications > Accessories > Terminal and execute following commands. Text in italics are commands to be executed.

apt-get install leafpad openjdk-7-jdk postgresql ant maven

Remove Guest Session at login in Ubuntu 14.04

Open Terminal using the short key, Ctrl + Alt + T
Apply following command to open the configuration file.

sudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf

Add following line below the last line,


Turn off animations (ripple effects) on Android Lollipop

You can adjust or turnoff animations and ripple effects on Android Lollipop and custom ROMs including CyanogenMod 12.

Go to Settings > Developer options

Find Animator  duration scale. Decrease its number.