TLDR
Enter a command. For example: gnome screenshot, tcpflow, module.

apt-mark

 
Utility to change the status of installed packages. More information: https://manpages.debian.org/latest/apt/apt-mark.8.html.
 
  • Mark a package as automatically installed:
     
    sudo apt-mark auto {{package_name}}
     
  • Hold a package at its current version and prevent updates to it:
     
    sudo apt-mark hold {{package_name}}
     
  • Allow a package to be updated again:
     
    sudo apt-mark unhold {{package_name}}
     
  • Show manually installed packages:
     
    apt-mark showmanual
     
  • Show held packages that aren't being updated:
     
    apt-mark showhold

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