Ubuntu

Contents:

• Only upgrade security related packages:
• Enable a service:
• Import a gpg key into apt:
• Find the Ubuntu version:
• dpkg
  • Lock a version of a package
  • Release the lock
  • See the current selections
• apt
  • Lock a version
  • Remove the hold
  • Look at info for a package
  • Find the files provided by a package
  • Upgrade one package
  • Find available versions
• Necessary packages:
• On the arm boards: