ubuntu 패키지 설치가 안될 경우 (계속 없다고 나오면)

/etc/apt/source.list 파일을 아래 내용으로 바꾸어 보고 다시 실행해봅니다.

#  # deb cdrom:[Ubuntu-Server 14.04.2 LTS _Trusty Tahr_ - Release amd64 (20150218.1)]/ trusty main restricted #deb cdrom:[Ubuntu-Server 14.04.2 LTS _Trusty Tahr_ - Release amd64 (20150218.1)]/ trusty main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://us.archive.ubuntu.com/ubuntu/ trusty main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ trusty main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://us.archive.ubuntu.com/ubuntu/ trusty-updates main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ trusty-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://us.archive.ubuntu.com/ubuntu/ trusty universe deb-src http://us.archive.ubuntu.com/ubuntu/ trusty universe deb http://us.archive.ubuntu.com/ubuntu/ trusty-updates universe deb-src http://us.archive.ubuntu.com/ubuntu/ trusty-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu  ## team, and may not be under a free licence. Please satisfy yourself as to  ## your rights to use the software. Also, please note that software in  ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://us.archive.ubuntu.com/ubuntu/ trusty multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ trusty multiverse deb http://us.archive.ubuntu.com/ubuntu/ trusty-updates multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ trusty-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://us.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu trusty-security main restricted deb-src http://security.ubuntu.com/ubuntu trusty-security main restricted deb http://security.ubuntu.com/ubuntu trusty-security universe deb-src http://security.ubuntu.com/ubuntu trusty-security universe deb http://security.ubuntu.com/ubuntu trusty-security multiverse deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu trusty partner # deb-src http://archive.canonical.com/ubuntu trusty partner ## Uncomment the following two lines to add software from Ubuntu's ## 'extras' repository. ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. # deb http://extras.ubuntu.com/ubuntu trusty main # deb-src http://extras.ubuntu.com/ubuntu trusty main