ubuntu查看软件包版本
The package management system on Ubuntu makes it extremely simple to install and remove packages, but sometimes it’s important to figure out what version of a particular package that you actually have installed.
Ubuntu上的软件包管理系统使安装和删除软件包变得极为简单，但是有时弄清楚您实际安装了哪个版本的特定软件包很重要。
The apt-get utilities are simply a front-end to the debian dpkg utility, which actually does the real work. You can use this utility to figure out what version is installed.
apt-get实用程序只是debian dpkg实用程序的前端，它实际上完成了实际工作。 您可以使用此实用工具来确定已安装的版本。
dpkg -s <packagename>
dpkg -s <软件包名称>
Here’s an example, where I was trying to figure out what version of Ruby I had installed on my system:
这是一个示例，我试图找出系统上安装了哪个版本的Ruby：
[email protected]:~$ dpkg -s ruby1.8
geek @ ubuntuServ：〜$ dpkg -s ruby1.8
Package: ruby1.8Status: install ok installedPriority: optionalSection: interpretersInstalled-Size: 272Maintainer: Ubuntu Core Developers <[email protected]>Architecture: i386Version: 1.8.4-5ubuntu1.2Depends: libc6 (>= 2.4-1), libruby1.8 (>= 1.8.4)Suggests: ruby1.8-examples, rdoc1.8, ri1.8Description: Interpreter of object-oriented scripting language Ruby 1.8Ruby is the interpreted scripting language for quick and easyobject-oriented programming. It has many features to process textfiles and to do system management tasks (as in perl). It is simple,straight-forward, and extensible..This package provides version 1.8 series of Ruby..On Debian, Ruby 1.8 is provided as separate packages. You can getfull Ruby 1.8 distribution by installing following packages..ruby1.8 ruby1.8-dev ri1.8 rdoc1.8 irb1.8 ruby1.8-elispruby1.8-examples libdbm-ruby1.8 libgdbm-ruby1.8 libtcltk-ruby1.8libopenssl-ruby1.8 libreadline-ruby1.8Original-Maintainer: akira yamada <[email protected]>
软件包：ruby1.8状态：安装ok已安装优先级：可选部分：解释器已安装大小：272维护器：Ubuntu Core Developers <[email protected]>体系结构：i386版本：1.8.4-5ubuntu1.2取决于：libc6(> = 2.4- 1)，libruby1.8(> = 1.8.4)建议：ruby1.8-examples，rdoc1.8，ri1.8描述：面向对象脚本语言的解释器Ruby 1.8Ruby是用于快速，轻松地面向对象的解释性脚本语言编程。 它具有许多功能来处理文本文件和执行系统管理任务(如perl中一样)。 它简单，直接且可扩展。.该软件包提供Ruby的1.8系列。.在Debian上，Ruby 1.8作为单独的软件包提供。 您可以通过安装以下软件包来获得完整的Ruby 1.8发行版。.ruby1.8ruby1.8-dev ri1.8 rdoc1.8 irb1.8 ruby1.8-elispruby1.8-examples libdbm-ruby1.8 libgdbm-ruby1.8 libtcltk- ruby1.8libopenssl-ruby1.8 libreadline-ruby1.8原始维护者：akira yamada <[email protected]>
You can see that I’ve got version 1.8.4 installed.
您可以看到我已经安装了1.8.4版本。
翻译自: https://www.howtogeek.com/howto/ubuntu/see-what-version-of-a-package-is-installed-on-ubuntu/
ubuntu查看软件包版本