列出所有已安裝的包

要列出 ubuntu 中安裝的所有軟體包，請鍵入以下命令

$ apt list --installed

輸出將顯示所有已安裝的軟體包。

Listing... Done
   accountsservice/trusty-updates,now 0.6.35-0ubuntu7.3 i386 [installed]
   acl/trusty,now 2.2.52-1 i386 [installed,automatic]
   acpid/trusty,now 1:2.0.21-1ubuntu2 i386 [installed]
   adduser/trusty,now 3.113+nmu3ubuntu3 all [installed]
   apparmor/trusty-updates,trusty-security,now 2.10.95-0ubuntu2.6~14.04.1 i386 [installed]
   apport/trusty-security,now 2.14.1-0ubuntu3.23 all [installed,upgradable to: 2.14.1-0ubuntu3.24]
   apport-symptoms/trusty,now 0.20 all [installed]
   apt/trusty-updates,trusty-security,now 1.0.1ubuntu2.17 i386 [installed]
   apt-transport-https/trusty-updates,trusty-security,now 1.0.1ubuntu2.17 i386 [installed]
   apt-utils/trusty-updates,trusty-security,now 1.0.1ubuntu2.17 i386 [installed]
   apt-xapian-index/trusty,now 0.45ubuntu4 all [installed]
   aptitude/trusty,now 0.6.8.2-1ubuntu4 i386 [installed]