I am using Linux MX 19 based on Debian 10 When I make an update by terminal sudo apt-get update I see this problem All packages are up to date. N: Ignoring file 'yarn.lis' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
how to fixed this error ?
1 Answer
The file extension .lis is not supported in /etc/apt/sources.list.d, rename the file to yarn.list.
From man 5 sources.list:
SOURCES.LIST.D
The /etc/apt/sources.list.d directory provides a way to add sources.list entries in separate files. Two different file formats are allowed as described in the next two sections. Filenames need to have either the extension .list or .sources depending on the contained format. The filenames may only contain letters (a-z and A-Z), digits (0-9), underscore (_), hyphen (-) and period (.) characters. Otherwise APT will print a notice that it has ignored a file, unless that file matches a pattern in the Dir::Ignore-Files-Silently configuration list - in which case it will be silently ignored.
(emphasis mine)
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