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I write here the most commands after i did a fresh install.

Remove Snap

sudo systemctl disable snapd.service
sudo systemctl disable snapd.socket
sudo systemctl disable snapd.seeded.service
sudo systemctl mask snapd.service

sudo systemctl disable snapd.service
sudo systemctl disable snapd.socket
sudo systemctl disable snapd.seeded.service

sudo snap remove firefox snap-store gtk-common-themes gnome-3-38-2004 core18 snapd-desktop-integration

Remove snap cache and purge snap and delete everything left if still exist something

sudo rm -rf /var/cache/snapd/
sudo apt autoremove --purge snapd
rm -rf ~/snap

Add Firefox

vim /etc/apt/preferences.d/firefox-no-snap

Add the following into it

Package: firefox*
Pin: release o=Ubuntu*
Pin-Priority: -1

Save and Follow the commands in terminal

sudo add-apt-repository ppa:mozillateam/ppa
sudo apt update
sudo apt install firefox

sudo apt update
sudo apt upgrade
sudo apt install ubuntu-restricted-extras
sudo apt install gnome-tweak-tool guake curl vlc barrier
sudo apt install texlive-full texmaker

Installing Albert

Albert is a software that similar to Spotlight Search in MacOS. I quite love it.

curl https://build.opensuse.org/projects/home:manuelschneid3 /public_key | sudo apt-key add -

echo 'deb http://download.opensuse.org/repositories/home:/manuelschneid3r/xUbuntu_20.04/ /' | sudo tee /etc/apt/sources.list.d/home:manuelschneid3r.list

sudo wget -nv https://download.opensuse.org/repositories/home:manuelschneid3r/xUbuntu_20.04/Release.key -O "/etc/apt/trusted.gpg.d/home:manuelschneid3r.asc"

sudo apt update
sudo apt install albert

Gnome Extensions

Gnome extensions add useful desktop environments and tools. Tweaks need to be installed in the system for editting gnome desktop.

$ sudo apt install gnome-tweak-tool

User Themes , Extensions, Sound Input & Output Device Chooser, Removable Drive Menu, Caffeine, Screenshot Tool, OpenWeather, Freon, Dash to Dock.

Copy Files with Speed and Progress Bar

Sometimes, we need to copy very large files and we don’t know the progress if cp is used. File Copying with progress bar and speed, pv is one of good choice to see this progress.

sudo apt install pv
pv filename.xyz > /path/filename.xyz