redis安装

redis安装流程：

1. 从网站下载压缩包

2. 解压：tar -zxvf 包名

3. 进入解压后的文件夹中

4. 使用make命令构建

5. 构建后使用make test 测试，可能需要安装tcl

6. 进入utils文件夹中运行 ./install_server.sh
   若报错

    Please take a look at the provided example service unit files in this directory, and adapt and install them. Sorry!
   

   则需要打开install_server.sh文件注释以下内容

    #_pid_1_exe=""$(readlink -f /proc/1/exe)""
    #if [ ""${_pid_1_exe##*/}"" = systemd ]
    #then
    # echo ""This systems seems to use systemd.""
    # echo ""Please take a look at the provided example service unit files in this directory, and adapt and install them. Sorry!""
    # exit 1
    #fi
    #unset _pid_1_exe
   

   注释之后重新运行"

    wget http://downloads.sourceforge.net/tcl/tcl8.6.1-src.tar.gz