Ubuntu Slack Instal
wget https://downloads.slack-edge.com/linux_releases/slack-desktop-4.0.2-amd64.deb
sudo apt install ./slack-desktop-*.deb
Colorful Cardinal
wget https://downloads.slack-edge.com/linux_releases/slack-desktop-4.0.2-amd64.deb
sudo apt install ./slack-desktop-*.deb
sudo snap install slack
sudo snap install slack --classicCopy
sudo snap install slack --classic