1、Redis对否安装（安装好了会出现下面对应的代码）

[lk@localhost /]$ whereis redis-cli
redis-cli: /usr/local/bin/redis-cli
[lk@localhost /]$ 
[lk@localhost /]$ whereis redis-server
redis-server: /usr/local/bin/redis-server

说明已经安装好了，如果不知道怎么安装，告诉你一个简单的方法，一步就可以把php、php-redis拓展，redis-server,redis-cli这三个装起来。

接着就把redis-server加入快捷键，谁都不想每次敲一长串地址：
2、启动Redis 

输入代码

redis-server &
[lk@localhost /]$ redis-server &
[1] 128054
[lk@localhost /]$ 128054:C 28 Jul 16:36:41.387 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
128054:M 28 Jul 16:36:41.388 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
128054:M 28 Jul 16:36:41.389 # Redis can't set maximum open files to 10032 because of OS error: Operation not permitted.
128054:M 28 Jul 16:36:41.389 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 3.0.7 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                   
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 128054
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           http://redis.io        
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

128054:M 28 Jul 16:36:41.391 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
128054:M 28 Jul 16:36:41.391 # Server started, Redis version 3.0.7
128054:M 28 Jul 16:36:41.392 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
128054:M 28 Jul 16:36:41.392 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
128054:M 28 Jul 16:36:41.392 * The server is now ready to accept connections on port 6379

 3.判断Redis是否启动

[root@localhost myredis]# redis-cli -p 6379
127.0.0.1:6379> ping
PONG
127.0.0.1:6379>