我可以安全地卸载 Ruby 吗？

Question

我希望删除非关键包以限制潜在安全漏洞的暴露。

我从不使用 Ruby。

删除 Ruby 会增加安全性还是会破坏系统的其他部分？

Answer 1

如果您的包管理器一开始就安装了 Ruby，那么您系统上的某些东西就需要它。

找出需要什么的最简单方法是测试删除包的尝试。例如：

# yum remove ruby
...
================================================================================
 Package         Arch      Version                Repository               Size
================================================================================
Removing:
 ruby            x86_64    1.8.7.352-12.el6_4     @updates                1.8 M
Removing for dependencies:
 facter          x86_64    1:1.7.3-1.el6          @puppetlabs-products    235 k
 hiera           noarch    1.2.1-1.el6            @puppetlabs-products     46 k
 puppet          noarch    3.3.0-1.el6            @puppetlabs-products    3.5 M
 ruby-irb        x86_64    1.8.7.352-12.el6_4     @updates                1.0 M
 ruby-rdoc       x86_64    1.8.7.352-12.el6_4     @updates                1.3 M
 ruby-rgen       noarch    0.6.5-1.el6            @puppetlabs-deps        315 k
 rubygem-json    x86_64    1.5.5-1.el6            @puppetlabs-deps        989 k
 rubygems        noarch    1.3.7-1.el6            @base                   711 k

Transaction Summary
================================================================================
Remove        9 Package(s)

Installed size: 9.9 M
Is this ok [y/N]: n
Exiting on user Command

所以在我的系统上，我看到 puppet 需要它。由于我实际上需要 puppet，因此我不会删除 ruby​​。

同样在基于 Debian 的系统上：

# apt-get remove ruby
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libshadow-ruby1.8 irb1.8 libaugeas0 rdoc libruby ruby1.8 rdoc1.8
  libaugeas-ruby1.8 puppet-common libruby1.8 libopenssl-ruby1.8
  libreadline-ruby1.8 libreadline5 libopenssl-ruby augeas-lenses
  libxmlrpc-ruby
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  facter puppet ruby
0 upgraded, 0 newly installed, 3 to remove and 48 not upgraded.
After this operation, 983kB disk space will be freed.
Do you want to continue [Y/n]? n
Abort.