show repositories on Ubuntu (and others)

 

 

debian

grep ^[^#] /etc/apt/sources.list /etc/apt/sources.list.d/*

 

https://www.networkworld.com/article/3305810/how-to-list-repositories-on-linux.html

 

Fix GPG signatures

sudo apt-key list  | grep "expired: " | sed -ne 's|pub .*/\([^ ]*\) .*|\1|gp' | xargs -n1 sudo apt-key adv --keyserver keys.gnupg.net --recv-keys

 

https://askubuntu.com/questions/650032/gpg-errorthe-following-signatures-were-invalid-keyexpired 

 

general apt structure is in:

/etc/apt

 

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