我正在尝试在 ubuntu 桌面 14.04 上安装 lamp 服务器
我从 开始sudo apt-get update。但这个过程似乎没有完成。在 Get: 1 列表完成后，我有
Get:2 http://www.plexapp.com lucid
InRelease
69% [2 InRelease gpgv 23.3 kB] [1 Sources 2,792 kB/6,399 kB 44%]
[Waiting for hSplitting up /var/lib/apt/lists/partial/www.plexapp.com_repo_dists_lucid_InReleasIgn http:// www.plexapp.com lucid InRelease
E: GPG error: http://www.plexapp.com lucid InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)
我需要修复这个问题吗？如果需要，该怎么做？
然后我继续：sudo apt-get install taskel
但得到
W: Duplicate sources.list entry http://linux.dropbox.com/ubuntu/ trusty/main i386 Packages (/var/lib/apt/lists/ linux.dropbox.com_ubuntu_dists_trusty_main_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems
E: Unable to locate package tasksel
正如您可能预料的那样，以下命令虽然尝试过但不起作用：
sudo taskel 安装 lamp-server
我也尝试过
sudo apt-get 安装 lamp-server^
结果如下
Note, selecting 'apache2-bin' for task 'lamp-server'
Note, selecting 'libapache2-mod-php5' for task 'lamp-server'
Note, selecting 'mysql-server-5.5' for task 'lamp-server'
Note, selecting 'mysql-client-core-5.5' for task 'lamp-server'
Note, selecting 'mysql-server' for task 'lamp-server'
Note, selecting 'php5-readline' for task 'lamp-server'
Note, selecting 'apache2-mpm-prefork' for task 'lamp-server'
Note, selecting 'mysql-client-5.5' for task 'lamp-server'
Note, selecting 'mysql-common' for task 'lamp-server'
Note, selecting 'libmysqlclient18' for task 'lamp-server'
Note, selecting 'mysql-server-core-5.5' for task 'lamp-server'
Note, selecting 'php5-mysql' for task 'lamp-server'
Note, selecting 'apache2-data' for task 'lamp-server'
Note, selecting 'apache2' for task 'lamp-server'
Note, selecting 'php5-common' for task 'lamp-server'
Note, selecting 'php5-cli' for task 'lamp-server'
libmysqlclient18 is already the newest version.
libmysqlclient18 set to manually installed.
mysql-common is already the newest version.
mysql-common set to manually installed.
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
apache2-bin : Depends:
libaprutil1-dbd-sqlite3 but it is not installable or
libaprutil1-dbd-mysql but it is not installable or
libaprutil1-dbd-odbc but it is not installable or
libaprutil1-dbd-pgsql but it is not installable or
libaprutil1-dbd-freetds but it is not installable
Depends: libaprutil1-ldap but it is not installable
mysql-client-5.5 : Depends: libdbd-mysql-perl (>= 1.2202) but it
is not installable
Depends: libdbi-perl but it is not installable
Depends: libterm-readkey-perl but it is not installable
mysql-server-5.5 : Depends: libdbi-perl but it is not
installable
Recommends: libhtml-template-perl but it is not installable
mysql-server-core-5.5 : Depends: libaio1 (>= 0.3.93) but it
is not installable
php5-common : Depends: php5-json but it is not installable
E: Unable to correct problems, you have held broken packages.