查询系统架构是AMD还是ARM

dpkg --print-architecture

安装 Telnet

yum -y install telnet telnet-server

开放防火墙端口

# 开启防火墙端口
firewall-cmd --zone=public --add-port=8080/tcp --permanent
firewall-cmd --reload
# 启动防火墙
systemctl start firewalld.service
# 停止防火墙
systemctl stop firewalld.service
# 禁用防火墙
systemctl disable firewalld.service
# 查看防火墙状态
systemctl status firewalld
# 查看防火墙所有开放的端口
firewall-cmd --zone=public --list-ports
# 关闭防火墙
firewall-cmd --permanent --zone=public --remove-port=8080/tcp

授权可执行文件

chmod +x back_orcl.sh

定时任务Crontab

crontab -e
0 11 * * * root ./etc/profile;/home/sysadm/server/dellog.sh
* 11 * * *  echo "" > /usr/local/nginx/logs/access.log
# 重启/停止定时任务服务
service crond restart
service crond start
service crond stop