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apt-get update가 apt-get update를 실행하라는 이유는 무엇입니까?
그래서 나는 이것을 계속하고 있습니다 : # apt-get update Get:1 http://ftp.us.debian.org etch Release.gpg [1032B] Hit http://ftp.us.debian.org etch Release (...bunch more of this elided...) Hit http://ftp.us.debian.org etch/contrib Sources Fetched 68.8kB in 1s (37.4kB/s) Reading package lists... Done W: There is no public key available for the following key IDs: 9AA38DCD55BE302B W: …