Otwarty folder w GUI z terminalu Linux

;'
xdg-open is part of the xdg-utils package, 
which is commonly installed by default in many 
distributions (including Ubuntu). It is designed 
to work for multiple desktop environments, 
calling the default handler for the file type in 
your desktop environment.

Try runing the xdg-open command followed by the directory path/name:
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xdg-open [directory name]

CoderHomie