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ALTERNATIVES TO UBUNTU SOFTWARE-CENTER

Software-center is a graphical interface for package management in Ubuntu. There are many alternatives to the Ubuntu software-center.

1. APPGRID:

Appgrid is a lightweight alternative to Ubuntu software-center. It will also allow you to purchase applications.You can install it in Ubuntu with these following commands:
sudo add-apt-repository ppa:appgrid/stable
sudo apt-get update
sudo apt-get install appgrid


2. LUBUNTU SOFTWARE-CENTER: 

Lubuntu software-center is another alternative to Ubuntu software-center.
The Lubuntu Software Center lets you browse and install thousands of
applications available for Lubuntu. You can view available
applications by category, or search quickly by name or description.
You can also examine the applications already installed, and remove
those you no longer need.

You can install it by using the following command:
sudo apt-get install lubuntu-software-center


3. DEEPIN SOFTWARE-CENTER:

You can install deepin software-center by using the following commands:


sudo add-apt-repository ppa:noobslab/deepin-sc
sudo apt-get update
sudo apt-get install deepin-software-center


4. SYNAPTIC PACKAGE MANAGER:

The Synaptic Package Manager enables you to install software onto your computer and to manage the software, that is already installed.
In detail Synaptic Package Manager provides the following features:
  • Install, remove, configure, upgrade and downgrade single and multiple packages.
  • Upgrade your whole system.
  • Manage package repositories.
  • Search packages by name, description and several other attributes.
  • Select packages by status, section, name or a custom filter.
  • Sort packages by name, status, size or version.
  • Browse all available online documentation related to a package.
  • Lock packages to the current version.
  • Force the installation of a specific package version.

You can install it by typing the following in a terminal:

sudo apt-get install synaptic

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PROBLEM:
Some times we get the following error while trying yo install software using apt-get or synaptic packaging manager.
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?


How can we resolve this?
SOLUTION: 
The problem occurs if we are running another applications like synaptic using the directory. So, if this is the case close the applications and try run the command again.
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**WARNING**
This should be used as last resort. If you use this carelessly you can end up with a broken system.
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sudo rm /var/lib/apt/lists/lock


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