安装redis-dump命令
我是在centos7上执行的
1.安装redis-dump执行的shell脚本如下：
#!/bin/bash
#首先到tmp下，用来存放下载的安装文件
cd /tmp
mkdir rvm
cd rvm
# 开始安装RVM
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
curl -O https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer
curl -O https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer.asc
gpg --verify rvm-installer.asc
curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import -
bash rvm-installer stable
source /etc/profile.d/rvm.sh
echo "===================split line by fangchangtan================================"
rvm list known
rvm install ruby 2.4.1
rvm use 2.4.1 --default
ruby --version
echo "================ruby installed! good job==============================="
##安装国内的gem自带源
echo "==============安装国内的gem自带源================="
gem sources --remove https://rubygems.org/
gem sources -a https://gems.ruby-china.com
gem sources -l
### 安装redis-dump命令
echo "=============安装redis-dump命令================="
gem install redis-dump -V以上的shell脚本执行之后，由于拉取的包源在国外（或者速度很慢）.有时候不太会成功。
