This is an annoyed issue, but after several tries, here is my approach for the fix:
sudo dpkg --configure --force-overwrite -a # or sudo apt -o Dpkg::Options::="--force-overwrite" --fix-broken install
Debian
Ubuntu Zoom Virtual Background without physical green screen
Virtual background in zoom is indeed a great feature, but unfortunately it doesn’t work on Ubuntu without a physical or real green screen. So here are some steps and commands you could run and make it work. (I use this on Ubuntu 20.04 but basically it should work for Lubuntu, LinuxMint, Debian or other systems as well as everything is via docker)
First install docker if you haven’t got it on your system already: https://leftsidemonitor.com/install-docker-and-docker-compose-on-linux/
Then run the following commands to install some required libraries
sudo apt install v4l2loopback-dkms; sudo modprobe -r v4l2loopback; sudo modprobe v4l2loopback devices=1 video_nr=20 card_label="v4l2loopback" exclusive_caps=1;
Now let’s clone this repo: https://github.com/leftsidemonitor/ubuntu-zoom-virtual-background, and run everything via docker
# Clone git clone https://github.com/leftsidemonitor/ubuntu-zoom-virtual-background.git ~/ubuntu-zoom-virtual-background cd ~/ubuntu-zoom-virtual-background cp docker_defaults.env .env docker-compose up &;
When you don’t want to use the webcam anymore, let’s stop it
cd ~/ubuntu-zoom-virtual-background; docker-compose down &;
Let’s also add some aliases some next time you can run and stop this much faster as well
# add to ~/.bashrc or ~/.zshrc alias fakecam='sudo modprobe -r v4l2loopback;sudo modprobe v4l2loopback devices=1 video_nr=20 card_label="v4l2loopback" exclusive_caps=1;cd ~/ubuntu-zoom-virtual-background; docker-compose up &;' alias stopcam='cd ~/ubuntu-zoom-virtual-background; docker-compose down &;'
That’s it, let us know if you manage to get it working in Zoom and other video calling software as well.
Install Yarn on Debian/Ubuntu
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources. sudo apt update && sudo apt install --no-install-recommends yarn # If you want to install yarn along with nodejs, use the following command # sudo apt update && sudo apt install yarn yarn --version
Install Mongodb server on Debian / Ubuntu
sudo apt-get install gnupg wget -qO - https://www.mongodb.org/static/pgp/server-4.4.asc | sudo apt-key add - echo "deb http://repo.mongodb.org/apt/debian buster/mongodb-org/4.4 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list sudo apt-get update sudo apt-get install -y mongodb-org sudo systemctl daemon-reload sudo systemctl start mongod sudo systemctl status mongod sudo systemctl enable mongod sudo systemctl stop mongod sudo systemctl restart mongod
Use locate command to find files in Linux
locate is a very useful command, which can be use from time to time to find files in Linux when we don’t know where that file is.
sudo apt update sudo apt install locate sudo updatedb # need to let sometime for this to finish locate .bashrc # locate can be called from anywhere locate -c "*thingtosearch" # search by regex, show count locate -e "*thingtosearch" # search in real-time, regardless db not updated. locate -i "*thingToSearch" # search and ignore case locate -S # view locate db at 10:56:54 Database /var/cache/locate/locatedb is in the GNU LOCATE02 format. Database was last modified at 2020:10:07 10:38:37.467600124 +0200 Locate database size: 5860142 bytes All Filenames: 464048 File names have a cumulative length of 34300427 bytes. Of those file names, 1317 contain whitespace, 0 contain newline characters, and 32 contain characters with the high bit set. Compression ratio 82.92% (higher is better)
Install Midori browser using Terminal
Midori is probably one of the most lightweight browser for Linux, sometimes we just need it to quickly search for text information on Google and this is the browser for that purpose.
sudo apt update sudo apt install midori midori
Install and use Vagrant on Linux for development
sudo apt-get autoremove virtualbox-dkms sudo apt-get install build-essential linux-headers-`uname -r` dkms virtualbox-dkms sudo modprobe vboxdrv sudo modprobe vboxnetflt
Install and use vagrant
sudo apt update sudo apt install curl curl -O https://releases.hashicorp.com/vagrant/2.2.10/vagrant_2.2.10_x86_64.deb sudo apt install ./vagrant_2.2.10_x86_64.deb ## Let's test vagrant --version mkdir vagrant-project cd vagrant-project vagrant init centos/8 ## If you already have a vagrant image.box vagrant box add mybox ./image.box vagrant init mybox vagrant up ## To ssh into vagrant box vagrant ssh ## To stop vagrant box vagrant halt ## To destroy and clean up everything vagrant destroy
Lightshot alternative for Linux
Flameshot is a very good screenshot app, works seamlessly like Lightshot on Windows, let’s install it the easy way:
## Install using apt sudo apt update sudo apt install flameshot ## Quickly bind Print (Prtsc) to flameshot gsettings set org.gnome.settings-daemon.plugins.media-keys screenshot '[]' gsettings set org.gnome.settings-daemon.plugins.media-keys custom-keybindings "['/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0/']" gsettings set org.gnome.settings-daemon.plugins.media-keys.custom-keybinding:/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0/ name 'flameshot' gsettings set org.gnome.settings-daemon.plugins.media-keys.custom-keybinding:/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0/ command '/usr/bin/flameshot gui' gsettings set org.gnome.settings-daemon.plugins.media-keys.custom-keybinding:/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0/ binding 'Print'
Install Docker on Linux using Terminal
sudo apt-get update
sudo apt-get install \
apt-transport-https \
ca-certificates \
curl \
gnupg-agent \
software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io
sudo systemctl enable docker
sudo docker run hello-world
sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker
docker run hello-worldOpen port on Linux command using iptables
For this example let’s say we want to open port 8080
iptables -A INPUT -m state --state NEW -p tcp --dport 8080 -j ACCEPT iptables-save