Couldnotexecute‘aptkey‘toverifysignature(isgnupginstalled?) 所有答案都是: 因为tmp文件夹权限不够 chmod777tmp aptgetupdateallowunauthenticated 然而没用,后在bing中找到答案sudoaptgetcleansudomvvarlibaptliststmpsudomkdirpvarlibaptlistspartialsudoaptgetcleansudoaptgetupdate