手機 - Nokia N900 - Debian - 解決Debian 8 public key is not available問題


參考資訊：
https://elkano.org/blog/debian-8-jessie-signatures-verified-public-key/

解決方式如下： 

$ wget -O - https://ftp-master.debian.org/keys/archive-key-8.asc | sudo apt-key add -
$ wget -O - https://ftp-master.debian.org/keys/archive-key-8-security.asc | sudo apt-key add -
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553
$ aptitude install debian-keyring debian-archive-keyring
$ sudo apt-get update