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Software management
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**APT** - Advanced Package Tool (apt is a command-line utility for installing, updating, removing, and otherwise managing  
deb packages on Ubuntu, Debian, and related Linux distributions) apt is a newer command-line tool that provides 
the same functionality as apt-get, and possibly more.  

* ``apt update`` - update list of available packages

* ``apt upgrade`` - upgrade all installed packages

* ``apt search <package_name>`` - search for package in repositories

* ``apt list --installed`` - list all installed packages

* ``apt insall --no-install-recommends <package_name>`` - install package without recommended packages and only packages 
  required to satisfy dependencies for the specified package (useful in docker images to reduce image size)

* ``apt remove <package_name>`` - remove package (configuration files are not removed)

* ``apt purge <package_name>`` - remove package and its configuration files (e.g ``apt purge nvidia-*`` - remove all nvidia packages)

* ``apt autoremove`` - remove packages that were automatically installed to satisfy dependencies 
  for other packages and are now no longer needed

* ``apt-key add <key_file>`` - add key_file to apt trusted keys (Key is a file containing a PGP key in ASCII 
  armor format is needed to authenticate the package repository. The apt-key add command is used to add the key)  

* ``apt-key list`` - list apt trusted keys

* ``dpkg`` - install, remove, and inspect deb packages (dpkg is a low-level tool for installing, removing, and inspecting deb packages)

* ``dpkg -i <package_name>`` - install package (e.g. ``dpkg -i google-chrome-stable_current_amd64.deb``)

* ``ubuntu-drivers`` - command-line tool to install drivers for hardware components (e.g. graphics cards)
  Drivers are provided by the Ubuntu repositories.

  - ``ubuntu-drivers devices`` - Show all devices which need drivers, and which packages are available for them.
  
  - ``ubuntu-drivers list`` - Show all driver packages which apply to the current system.

  - ``ubuntu-drivers install <package_name>`` - Install driver package (e.g. ``ubuntu-drivers install nvidia-driver-440``)


**dpkg** - Debian package management system 
it is a low-level tool for installing, removing, and inspecting deb packages.
Comparing to apt, dpkg **does not resolve dependencies** and does not download packages from repositories.

* ``dpkg -i <package_name>`` - install package (e.g. ``dpkg -i google-chrome-stable_current_amd64.deb``)

* ``dpkg -l`` - list all installed packages

* ``dpkg -l | grep <package_name>`` - list installed packages that contain package_name