TLDR
Enter a command. For example: nordvpn, runcon, strace, lscpu.

xdg-mime

 
Query and manage MIME types according to the XDG standard. More information: https://portland.freedesktop.org/doc/xdg-mime.html.
 
  • Display the MIME type of a file:
     
    xdg-mime query filetype {{path/to/file}}
     
  • Display the default application for opening PNGs:
     
    xdg-mime query default {{image/png}}
     
  • Display the default application for opening a specific file:
     
    xdg-mime query default $(xdg-mime query filetype {{path/to/file}})
     
  • Set imv as the default application for opening PNG and JPEG images:
     
    xdg-mime default {{imv.desktop}} {{image/png}} {{image/jpeg}}

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