GNU/Linux Ubuntu 22.04 Install ICQ – Step by step Guide
How to Install ICQ Client Snap in Ubuntu 22.04 Jammy LTS GNU/Linux desktop – Step by step Tutorial.
And ICQ for Ubuntu Jammy is a Free Messenger with which you can also Make High-Quality Video Chat and make Low-Cost Phone Calls to any country.
Again Snaps are Containerized Software Packages that are Simple to Install and are Auto-Updating.
Especially relevant: often Snaps are much Larger than common Packages but also are usually Working Nicely in all the supported GNU/Linux desktops.

1. Terminal Getting Started Guide
How to QuickStart with Command Line on Ubuntu GNU/Linux:
First Update the Apt Repo Sources with:
sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
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