1.安装包的准备
官网地址：https://redis.io/download
以下是我下载的安装包： 
也可以直接用命令执行下载：
语法：wget [需要下载的安装包的URL]
例子：（会下载到当前路径）
# wget http://download.redis.io/releases/redis-4.0.1.tar.gz[root@iz2ze6u0apce8jpapxeubpz tar.gz]# wget http://download.redis.io/releases/redis-4.0.1.tar.gz
--2017-08-03 12:48:00-- http://download.redis.io/releases/redis-4.0.1.tar.gz
Resolving download.redis.io (download.redis.io)... 109.74.203.151
Connecting to download.redis.io (download.redis.io)|109.74.203.151|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1711660 (1.6M) [application/x-gzip]
Saving to: 鈥榬edis-4.0.1.tar.gz.1鈥
100%[===================================================================================================>] 1,711,660 737KB/s in 2.3s
2017-08-03 12:48:03 (737 KB/s) - 鈥榬edis-4.0.1.tar.gz.1鈥saved [1711660/1711660]
[root@iz2ze6u0apce8jpapxeubpz tar.gz]# 2、解压并安装
# tar -zxvf redis-4.0.1.tar.gz 然后把解压的目录放到指定的目录下
# mv redis-4.0.1 ../语法说明：
# mv [源目录] [目标目录]然后切换到该目录下：
# cd ../redis-4.0.1进行编译：
# make
Hint: It's a good idea to run 'make test' ;)
make[1]: Leaving directory `/usr/local/redis-4.0.1/src'[root@iz2ze6u0apce8jpapxeubpz redis-4.0.1]# make test
cd src && make test
make[1]: Entering directory `/usr/local/redis-4.0.1/src'
You need tcl 8.5 or newer in order to run the Redis test
make[1]: *** [test] Error 1
make[1]: Leaving directory `/usr/local/redis-4.0.1/src'
make: *** [test] Error 2
[root@iz2ze6u0apce8jpapxeubpz redis-4.0.1]# 进入src下执行：
bash-4.2$ cd src
bash-4.2$ make
Hint: It's a good idea to run 'make test' ;)
bash-4.2$ make test
You need tcl 8.5 or newer in order to run the Redis test
make: *** [test] Error 1
bash-4.2$ 解决方式
安装tcl
wget http://downloads.sourceforge.net/tcl/tcl8.6.1-src.tar.gz
sudo tar xzvf tcl8.6.1-src.tar.gz -C /usr/local/
cd /usr/local/tcl8.6.1/unix/
sudo ./configure
sudo make
sudo make install 以下截图是另外一种方式：截图来源忘了 