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Trying to install a display driver .run file in the terminal using Ubuntu 18.04. I was told that using ./FILENAME.run should to the trick. What's the problem? 

bruno@bruno:~/Downloads/displaylink$ ls -l
total 23904
-rw-r--r-- 1 bruno bruno 12332791 Feb  4 10:57  displaylink-driver-5.1.26.run
-r-------- 1 bruno bruno 12102697 Mai 17 10:14 'DisplayLink USB Graphics Software for Ubuntu 5.1.zip'
-rw-r--r-- 1 bruno bruno    40054 Feb 13 13:35  LICENSE


bruno@bruno:~/Downloads/displaylink$ sudo ./displaylink-driver-5.1.26.run
sudo: ./displaylink-driver-5.1.26.run: command not found
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  • Does the file have execute permission? Update your question with ls -l results instead of plain ls.
    – AFH
    May 17, 2019 at 13:51
  • I think so since it says "Permission denied" when I don't include the "sudo". I edited the $ls$ part.
    – cheesus
    May 17, 2019 at 13:56
  • Lack of execute permission is the problem: do chmod -v uga+x displaylink-driver-5.1.26.run. It's a common problem with down-loaded files.
    – AFH
    May 17, 2019 at 13:59

1 Answer 1

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The reason that the .run file will not run is that it lacks execute permission. This is a common problem with down-loaded files, and it is easily corrected:

chmod -v uga+x displaylink-driver-5.1.26.run

Since the file is owned by bruno there is no need to use sudo to change the permissions. Setting all execute makes sure that the file will run under sudo.

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