How to fix E: Could not get lock /var/lib/apt/lists/lock problem


You got following message when you try to run apt-get update command in Ubuntu?

E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

 Solution

1. Search for processes

ps -A | grep apt-get

2. See if there is any process running as apt-get then kill that process

sudo kill -9 

If the error persists, apply following commands in a termina,

sudo su
sudo rm /var/lib/apt/lists/lock
apt-get update


How to Install Broadcom Wireless Driver (BCM4313) in Ubuntu / Xubuntu 12.04

I tried following method to install Broadcom wireless Driver with Dell Vostro 3500  in Ubuntu/Xubuntu 12.04 (64 bit) Linux.

First of all check your wireless chipset model number,

lspci | grep Network

Install following prerequisites,

sudo apt-get install linux-headers-generic build-essential dkms

Download the package from here,

Open following file,

gedit /etc/modprobe.d/blacklist.conf

Add following lines,

blacklist b43
blacklist b43legacy
blacklist bcma
blacklist ndiswrapper


Comment the following line,

# blacklist bcm43xx

Restart laptop and check wireless working or not.

Mobile media converter

Mobile Media Converter is a helpful tool for mobile users to cross platform transfer of media files. It can handle various formats like MP3, Windows Media Audio (wma), Ogg Vorbis Audio (ogg), Wave Audio (wav), MPEG video, AVI, Windows Media Video (wmv), Flash Video (flv), QuickTime Video (mov) and commonly used mobile devices/phones formats like AMR and 3GA audio (amr) and 3GP video.


Here is the link to mobile Media Converter

Install HP LaserJet P1108 printer in Ubuntu 12.04

Visit the following page to install HP Laserjet P1108 in Ubuntu 16.04 / Debian 8.
http://linuxhalwa.blogspot.in/2017/06/install-hp-laserjet-p1108-printer-in-ubuntu.16.04.html

You can find that HP LaserJet P1108 do not work simply adding printer with Ubuntu 12.04. You have to execute following commands to configure the printer


sudo apt-get install python-qt4
sudo apt-get install hplip-cups
sudo hp-setup


User settings,

sudo adduser vimal lp
sudo adduser vimal lpadmin

Replace vimal with your user name. 

Install Drupal on Ubuntu 12.04

Drupal is an Open Source content management system. Drupal is very powerful, flexible and popular among web developers. Whitehouse website build on Drupal.


Now Drupal is now available with Ubuntu 12.04 software repository and very easy to install. Please follow the instructions to install Druapl on your Ubuntu 12.04 server or desktop.

Install LAMP server
LAMP package contain MySQL, Apache and PHP.

apt-get update
apt-get upgrade
apt-get install lamp-server^

Enter MySQL root password during installation. 

Enable rewrite function in Apache,

sudo a2enmod rewrite
sudo service apache2 restart


Install Drupal

apt-get install drupal7

Check which version of Drupal is available latest and change version number.

Add Drupal configuration for Apache,

sudo cp /etc/drupal/7/apache2.conf /etc/apache2/mods-enabled/drupal.conf

Restart Apache

sudo service apache2 restart

Open a browser and type the address and proceed with installation process,

http://127.0.1.1/drupal7/install.php

Update Drupal to latest version using Drush
Drush is a command line shell and scripting interface for Druapl.

sudo su 
apt-get install drush

Check new Drupal updates available. Enter inside the Drupal installation place and apply following commands.
cd /usr/share/drupal7
drush up -n | grep available
drush up

Information courtesy: https://help.ubuntu.com/community/Drupal

To know wireless card information in your laptop?

To find wireless card model number is essential to install suitable driver. Execute following command in a terminal to display wireless driver information,

lspci | grep Network