ruby是上世纪90年代日本开发者开发的面向对象的脚本程序语言，在部署及维护上脚本的编写很实用。
https://www.ruby-lang.org/zh_cn/
https://www.ruby-lang.org/zh_cn/downloads/
https://www.ruby-lang.org/zh_cn/documentation/
https://rubygems.org/ ###gem源，管理ruby的程序包
https://gems.ruby-china.com
Ruby红宝石
ruby编译安装
https://cache.ruby-china.com/pub/ruby/ //下载地址mirrors
requirement
yum install -y gcc gcc-c++ make autoconf
yum install -y zlib-devel openssl-devel
tar jxf ruby-2.2.10.tar.bz2
compile ruby
./configure -q --prefix=/usr/local/ruby
make -s -j2
make install -s
addon zlib/openssl
[root@c-3-103 ext]# pwd
/root/ruby-2.2.10/ext
[root@c-3-103 ext]# openssl zlib //目录下各自编译安装到ruby
ruby extconf.rb
make -s
make install
add-env
tee <<-'EOF' >>/etc/profile
#define ruby-env
export PATH=/usr/local/ruby/bin:$PATH
EOF
source /etc/profile
查看本机gem源及更新缓存
离线安装gem
gem install -l redis-xxx.gem //离线安装gem
