免责声明：我对 Linux 的经验相对较少
我正在尝试按照本指南安装 perforce swarm：http://www.perforce.com/perforce/doc.current/manuals/swarm/setup.packages.html按照 Debian 的步骤操作。前两个步骤没有出现任何错误，看起来它们正在执行应有的操作，然后在第 3 步收到此消息。我在这里遗漏了什么？
administrator@ubuntu:~$ sudo apt-get install perforce-swarm
[sudo] password for administrator:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package perforce-swarm is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'perforce-swarm' has no installation candidate
编辑：重新运行sudo apt-get update下面的完整输出
administrator@ubuntu:~$ sudo apt-get update
[sudo] password for administrator:
Hit http://package.perforce.com precise InRelease
Hit http://package.perforce.com precise/release i386 Packages
Ign http://extras.ubuntu.com trusty InRelease
Hit http://extras.ubuntu.com trusty Release.gpg
Ign http://us.archive.ubuntu.com trusty InRelease
Ign http://package.perforce.com precise/release Translation-en_US
Ign http://package.perforce.com precise/release Translation-en
Hit http://extras.ubuntu.com trusty Release
Ign http://us.archive.ubuntu.com trusty-updates InRelease
Ign http://us.archive.ubuntu.com trusty-backports InRelease
Hit http://extras.ubuntu.com trusty/main Sources
Hit http://us.archive.ubuntu.com trusty Release.gpg
Ign http://security.ubuntu.com trusty-security InRelease
Get:1 http://us.archive.ubuntu.com trusty-updates Release.gpg [933 B]
Hit http://extras.ubuntu.com trusty/main i386 Packages
Get:2 http://security.ubuntu.com trusty-security Release.gpg [933 B]
Hit http://us.archive.ubuntu.com trusty-backports Release.gpg
Hit http://us.archive.ubuntu.com trusty Release
Get:3 http://security.ubuntu.com trusty-security Release [63.5 kB]
Get:4 http://us.archive.ubuntu.com trusty-updates Release [63.5 kB]
Hit http://us.archive.ubuntu.com trusty-backports Release
Hit http://us.archive.ubuntu.com trusty/main Sources
Hit http://us.archive.ubuntu.com trusty/restricted Sources
Hit http://us.archive.ubuntu.com trusty/universe Sources
Hit http://us.archive.ubuntu.com trusty/multiverse Sources
Ign http://extras.ubuntu.com trusty/main Translation-en_US
Hit http://us.archive.ubuntu.com trusty/main i386 Packages
Hit http://us.archive.ubuntu.com trusty/restricted i386 Packages
Ign http://extras.ubuntu.com trusty/main Translation-en
Get:5 http://security.ubuntu.com trusty-security/main Sources [80.3 kB]
Hit http://us.archive.ubuntu.com trusty/universe i386 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://us.archive.ubuntu.com trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty/universe Translation-en
Get:6 http://us.archive.ubuntu.com trusty-updates/main Sources [196 kB]
Get:7 http://security.ubuntu.com trusty-security/restricted Sources [2,061 B]
Get:8 http://security.ubuntu.com trusty-security/universe Sources [21.9 kB]
Get:9 http://security.ubuntu.com trusty-security/multiverse Sources [1,922 B]
Get:10 http://security.ubuntu.com trusty-security/main i386 Packages [256 kB]
Get:11 http://us.archive.ubuntu.com trusty-updates/restricted Sources [2,564 B]
Get:12 http://us.archive.ubuntu.com trusty-updates/universe Sources [114 kB]
Get:13 http://us.archive.ubuntu.com trusty-updates/multiverse Sources [4,773 B]
Get:14 http://us.archive.ubuntu.com trusty-updates/main i386 Packages [500 kB]
Get:15 http://security.ubuntu.com trusty-security/restricted i386 Packages [8,846 B]
Get:16 http://security.ubuntu.com trusty-security/universe i386 Packages [101 kB]
Get:17 http://us.archive.ubuntu.com trusty-updates/restricted i386 Packages [9,256 B]
Get:18 http://security.ubuntu.com trusty-security/multiverse i386 Packages [3,643 B]
Get:19 http://us.archive.ubuntu.com trusty-updates/universe i386 Packages [276 kB]
Hit http://security.ubuntu.com trusty-security/main Translation-en
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Get:20 http://us.archive.ubuntu.com trusty-updates/multiverse i386 Packages [11.9 kB]
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/main Sources
Hit http://us.archive.ubuntu.com trusty-backports/restricted Sources
Hit http://us.archive.ubuntu.com trusty-backports/universe Sources
Hit http://us.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://us.archive.ubuntu.com trusty-backports/main i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/main Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/universe Translation-en
Ign http://us.archive.ubuntu.com trusty/main Translation-en_US
Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_US
Ign http://us.archive.ubuntu.com trusty/universe Translation-en_US
Fetched 1,718 kB in 16s (106 kB/s)
Reading package lists... Done
administrator@ubuntu:~$ sudo apt-get install perforce-swarm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package perforce-swarm is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'perforce-swarm' has no installation candidate
administrator@ubuntu:~$
编辑 2：更多信息
administrator@ubuntu:~$ ls -l /var/lib/apt/lists/ | grep perforce
-rw-r--r-- 1 root root 3168 Apr 22 18:16 package.perforce.com_apt_ubuntu_dists_precise_InRelease
-rw-r--r-- 1 root root 15822 Apr 22 18:16 package.perforce.com_apt_ubuntu_dists_precise_release_binary-i386_Packages
答案1
我没有成功安装该软件包，所以我最终绕了很长的路，通过发行版进行安装/配置http://www.perforce.com/perforce/doc.current/manuals/swarm/setup.dependencies.html