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redis基本安装判断、启动使用方法，具体如下：
1、Redis对否安装（安装好了会出现下面对应的代码）
[root]$ whereis redis-cli redis-cli: /usr/local/bin/redis-cli [root]$ [root]$ whereis redis-server redis-server: /usr/local/bin/redis-server
2、启动Redis
输入代码
redis-server & 30733:C 09 Dec 14:45:30.876 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf 30733:M 09 Dec 14:45:30.879 # You requested maxclients of 10000 requiring at least 10032 max file descriptors. 30733:M 09 Dec 14:45:30.879 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted. 30733:M 09 Dec 14:45:30.879 # 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'. [root]$ _._ _.-``__ ''-._ _.-`` `. `_. ''-._ Redis 3.2.0 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in standalone mode |`-._`-...-` __...-.``-._|'` _.-'| Port: 6379 | `-._ `._ / _.-' | PID: 30733 `-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-' 30733:M 09 Dec 14:45:30.900 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 30733:M 09 Dec 14:45:30.900 # Server started, Redis version 3.2.0 30733:M 09 Dec 14:45:30.901 # 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. 30733:M 09 Dec 14:45:30.901 # 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. 30733:M 09 Dec 14:45:30.902 * The server is now ready to accept connections on port 6379
3.判断Redis是否启动
[root]# redis-cli -p 6379 127.0.0.1:6379> ping PONG 127.0.0.1:6379>
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