[root@localhost tank]# yum install ruby rubygems ruby-devel   //安装rubygems 以及相关包  
[root@localhost tank]# gem sources -a http://ruby.taobao.org/   //源，加入淘宝，外面的源不能访问  
http://ruby.taobao.org/ added to sources  
[root@localhost tank]# gem install redis-dump -V   //安装redis-dump  

[root@localhost tank]# telnet 127.0.0.1 6379 //telnet到redis  
Trying 127.0.0.1...  
Connected to 127.0.0.1.  
Escape character is '^]'.  
set test 11 //设置一个值  
+OK  
get test //取值  
$2  
11  
  
[root@localhost tank]# redis-dump -u 127.0.0.1:6379 >test.json //导出数据  

[root@localhost tank]# telnet 127.0.0.1 6379 //telnet到redis  
Trying 127.0.0.1...  
Connected to 127.0.0.1.  
Escape character is '^]'.  
flushall //请空所有数据  
+OK  
keys * //查看已清空  
*0  
  
[root@localhost tank]# < test.json redis-load //导入数据  
  
[root@localhost tank]# telnet 127.0.0.1 6379  
Trying 127.0.0.1...  
Connected to 127.0.0.1.  
Escape character is '^]'.  
keys * //已导入成功  
*1  
$4  
test