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When I try to upgrade firefox on Ubuntu I get this message in the terminal

E: Type '$' is not known on line 1 in source list /etc/apt/sources.list.d/brave-browser-release-bionic.list
E: The list of sources could not be read.
E: Type '$' is not known on line 1 in source list /etc/apt/sources.list.d/brave-browser-release-bionic.list
E: The list of sources could not be read.
Rinzwind
  • 309,379
burt
  • 1

1 Answers1

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From the comments...

cat /etc/apt/sources.list.d/brave-browser-release-bionic.list

Output is...

 $ sudo apt update $ sudo apt install brave-browser brave-keyring

So do this...

Delete the /etc/apt/sources.list.d/brave-browser-release-bionic.list file, as its contents are completely invalid.

sudo rm -i /etc/apt/sources.list.d/brave-browser-release-bionic.list

heynnema
  • 73,649