NOTE: This may not be desirable if you have a slow Internet connection, since it will cause you to re-download any packages you need to install a program.

• The package cache is in /var/cache/apt/archives.

• See how much space cached packages are consuming:

  du -sh /var/cache/apt/archives

NOTE: autoclean only removes those retrieved package files that have a newer version now, and so will not be used anymore.

• This command removes .deb files for packages that are no longer installed on your system.
• Depending on your installation habits, removing these files from /var/cache/apt/archives may regain a significant amount of diskspace.

NOTE: autoremove removes libraries and packages that were installed automatically to satisfy the dependencies of another installed package.

• If that package is removed, these automatically installed packages are useless in the system, and this command removes such packages.