# 17.7 centos7安装升级ruby 转载自： ## 在线安装ruby ``` yum -y install ruby ruby -v ``` ## 添加ruby仓库 添加aliyun镜像 ``` gem sources -a http://mirrors.aliyun.com/rubygems/ ``` 删除原来的镜像 ``` gem sources --remove https://rubygems.org/ ``` 查看当前镜像源 ``` gem sources -l ``` ## 安装RAM > RAM（[Ruby Version Manager](https://rvm.io/) ）是一款RAM的命令行工具，可以使用RAM轻松安装，管理Ruby版本。RVM包含了Ruby的版本管理和Gem库管理(gemset)安装 安装 ``` gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB curl -sSL https://get.rvm.io | bash -s stable ``` 更新配置文件，使其立马生效： ``` source /etc/profile.d/rvm.sh ``` 查看RVM版本信息，如果可以代表安装成功。 ``` rvm -v ``` 查看Ruby版本 ``` rvm list known ``` 选定版本进行安装 ``` rvm install 2.5 ``` 验证版本 ``` ruby -v ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.clay-wangzhi.com/17-redis/17.7-centos7-an-zhuang-sheng-ji-ruby.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.