APT(Advanced Packaging Tool)

• Installing apt-cache and apt-file:
  sudo apt-get install apt-file
sudo apt-file update
  
• Search a repository for a package:
  apt-cache search {package}
  
• Display information for a package:
  apt-cache show {package}
  
• Display detailed information for a package:
  apt-cache showpkg {package}
  
• Show all dependencies for a package:
  apt-cache depends {package}
  
• Search the repo for a file:
  apt-file search {filename}
  
• List all files for a package:
  apt-file list {package}
  
• Install a package:
  sudo apt install {package}
  
• Remove a package:
  sudo apt remove {package}
  
• Remove a package and its config files:
  sudo apt --purge remove {package}
  
• Synchronize the package index files with their sources:
  sudo apt update
  
• Upgrade all available updates to packages already installed:
  sudo apt upgrade
  Note: Must always run update before upgrade.
  
• To clean up:
  
  • apt clean to clean out cache files and and any archived package files.
  • apt autoremove to gets rid of any packages not needed.