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I seek a command line solution to list all packages that synaptic displays as "local or obsolete".

This answer to this question gives the command aptitude search ~o which gives a partial list. I suspect that other options after the ~ might help, but haven't found them documented.

Synaptic's list: enter image description here

Output of aptitude search ~o:

$ aptitude search ~o
i   hexen2-data                     - Hexen II commercial data files            
i   hexen2-portals-data             - Hexen II Mission Pack: Portal of Praevus  
i   libdvdcss-dev                   - library for accessing encrypted DVDs - dev
i   libdvdcss2                      - library for accessing encrypted DVDs      
i   quake2-full-data                - Quake II data files                       
i   quake2-groundzero-data          - Quake II Mission Pack 2: Ground Zero data 
i   quake2-reckoning-data           - Quake II Mission Pack 1: The Reckoning dat
i   scangearmp2                     - ScanGear MP for Linux.

Note that the packages 'orphaned' when Canonical pulled updates to them out of the repos are not listed by this command. Neither is pcmanfm which I installed using gdebi.

What's a command I can run in the terminal to give me the same list as synaptic produces?

Organic Marble
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  • i know only half of the answer. For displaying local packages you can use apt-mark showmanual Most of them are metapackages. – nobody Jun 24 '19 at 06:57
  • @user966203 thanks for your comment. On my system that command generates a giant list of packages, far more than are shown in the Synaptic list. – Organic Marble Jun 26 '19 at 19:36

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