$ brew upgrade Error: Another active Homebrew update process is already in progress. Please wait for it to finish or terminate it to continue. [t]2020-09-12 07:43:55
Bonneau J., Preibusch S., Anderson R. (2012) "A Birthday Present Every Eleven Wallets? The Security of Customer-Chosen Banking PINs. " [t]2020-09-12 19:51:01