Ubuntu users use Launchpad to install new software

As a Ubuntu user, you may have the following experiences: When you use "sudoapt-getinstallarora", you will find that the installed Arora browser is of Arora0.7.0, instead of the latest version of Arora0.8.0. When you use "sudoapt-getinstallamule", you will find that the installed aMule version is aMule2.2.4, not the latest version of aMule2.2.5. When you use "sud

As a Ubuntu user, you may have the following experiences:

When you use "sudo apt-get install arora", you will find that the installed Arora browser is of version 0.7.0 rather than the latest version 0.8.0.

When you use "sudo apt-get install amule", you will find that the installed aMule version is aMule2.2.4, rather than the latest version of aMule2.2.5.

When you use "sudo apt-get install XXXX", you find that the terminal prompts "cannot find the package XXXX ".

In this case, you need to rely on the ppa source in Launchpad to install it for you. The following uses installing Arora 0.8.0 as an example to describe how to use Launchpad to install the latest software.

Launchpad isThe website set up by Ubuntu parent company Canonical Limited is a platform that provides maintenance, support, or contact Ubuntu developers.

Launchpad URL:Https://launchpad.net/

Step 1:Enter the software name or related content in the search box, such as ppa arora.

Step 2:You can find the software source through the title

Step 3:Select the source that meets your Ubuntu version

Step 4: add source:

You can use the Ubuntu Tweak source editor to add:

You can also enter:

sudo gedit /etc/apt/sources.list

Paste the file and save it.

Step 5 (01 ):The first method to add a public key:Select"Signing Key: 1024R /"And then add:
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com

Step 5 (02): method 2 for adding a Public Key: You can also click the link to see 'ox ******** '. Select"OX"And then add:

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com

Step 6: update and install

Enter at the terminal:

sudo apt-get update

sudo apt-get install arora

In additionIf you encounter:

W: GPG signature verification error: http://ppa.launchpad.net jaunty Release: The following signature cannot be verified because there is no public key: NO_PUBKEY 5A9BF3BB4E5E17B5
W: You may need to run apt-get update to solve these problems.

This prompt indicates that the public key needs to be added. The solution is to add the Public Key "5A9BF3BB4E5E17B5:
Enter at the terminal:
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 5A9BF3BB4E5E17B5
There are many similar issues related to public key addition, which can be solved using the above solution.

Reprinted Please note: