解决办法如:
https://blog.csdn.net/gl1987807/article/details/7253021
运行:yum -y install vim-enhanced.x86_64 安装成功,如下:
# /etc/init.d/crond start //启动服务
# /etc/init.d/crond stop //关闭服务
# /etc/init.d/crond restart //重启服务
# /etc/init.d/crond reload //重新载入配置
# /etc/init.d/crond status //查看crontab服务状态