嘗試安裝netbeans和eclipse，但都給出以下錯誤（這是因為伺服器關閉並且很快就會恢復而引起的嗎？我也無法使用apt-get來安裝丟失的軟體包。也嘗試過http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html但它說 等丟失ls，mkdir而實際上並沒有丟失）：
Err http://in.archive.ubuntu.com/ubuntu/ precise-updates/main icedtea-netx-common all 1.2-2ubuntu1.3
404 Not Found [IP: 91.189.92.201 80] Err http://security.ubuntu.com/ubuntu/ precise-security/main icedtea-netx-common all 1.2-2ubuntu1.3
404 Not Found [IP: 91.189.92.202 80]
Err http://security.ubuntu.com/ubuntu/ precise-security/main icedtea-netx
i386 1.2-2ubuntu1.3
404 Not Found [IP: 91.189.92.202 80]
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/i/icedtea-web/icedtea-netx-common_1.2-2ubuntu1.3_all.deb
404 Not Found [IP: 91.189.92.202 80] Failed to fetch
http://security.ubuntu.com/ubuntu/pool/main/i/icedtea-web/icedtea-netx_1.2-2ubuntu1.3_i386.deb
404 Not Found [IP: 91.189.92.202 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
答案1
我下載了 RPM，結果發現它與 Ubuntu 不相容。所以我下載了 tar 檔案並這個答案幫我安裝了。