MongoDB GPG – Invalid Signatures

Update all expired keys from Ubuntu key server in one command:

sudo apt-key list | \
 grep "expired: " | \
 sed -ne 's|pub .*/\([^ ]*\) .*|\1|gp' | \
 xargs -n1 sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys

Command explanation:

1. sudo apt-key list – lists all keys installed in the system;
2. grep "expired: " – leave only lines with expired keys;
3. sed -ne 's|pub .*/\([^ ]*\) .*|\1|gp' – extracts keys;
4. xargs -n1 sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys – updates keys from Ubuntu key server by found expired ones.

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