内存 cpu查看

free -h  以适合内存单位显示内存状况free -s 数字 每几秒刷新内存显示
top   按e切换显示单位

防火墙

centos7

查看防火墙状态

firewall-cmd --state

进行firewall

systemctl stop firewalld.service

禁止firewall开机启动

systemctl disable firewalld.service

端口转发

开启内核转发vim /etc/sysctl.confnet.ipv4.ip_forward=1保留后，使批改内容失效sysctl -p直达服务器(IP 2.2.2.2)    指标服务器(IP 1.1.1.1)iptables -t nat -A PREROUTING -p tcp --dport 4000 -j DNAT --to-destination 1.1.1.1:4000iptables -t nat -A PREROUTING -p udp --dport 4000 -j DNAT --to-destination 1.1.1.1:4000iptables -t nat -A POSTROUTING -p tcp -d 1.1.1.1 --dport 4000 -j SNAT --to-source 2.2.2.2iptables -t nat -A POSTROUTING -p udp -d 1.1.1.1 --dport 4000 -j SNAT --to-source 2.2.2.2service iptables saveservice iptables restart

docker装置

curl -fsSL get.docker.com -o get-docker.sh && sh get-docker.sh --mirror Aliyun&&systemctl enable docker&&systemctl start docker

docker-compose装置

最新版本号自行查看：https://github.com/docker/compose/releases

curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose 
chmod +x /usr/local/bin/docker-compose

docker下装置oracle数据库，以及导入导出数据

docker装置oracle参考
docker-compose.yml文件

version: '3.1'services:  oracle:    image: jaspeen/oracle-xe-11g    container_name: oracle11g    privileged: true    environment:      - TZ=Asia/Shanghai      - ORACLE_HOME=/home/oracle/app/oracle/product/11.2.0/dbhome_2    volumes:      - ./data:/u01/app/oracle    ports:      - 1521:1521    restart: always
-- 创立表空间 create tablespace qxjnew   datafile '/u01/app/oracle/oradata/XE/qxjnew.dbf'   size 1000M   autoextend on;-- 创立用户 默认表空间create user qxjnew identified by password default tablespace qxjnew;alter user qxjnew default tablespace ytj_data;-- dba权限grant  dba  to qxjnew;-- 删除表空间drop tablespace test2 including contents and datafiles;-- 删除用户drop user flww cascade;-- 进入dockerdocker exec -it oracle11g bash-- 切换到oracle用户 su - oracle-- 导出某个用户下数据 dmp文件   exp flww/password@ip:port:XE file=./flwwback.dmp log=./flwwback.log owner=flww-- 导入数据库imp test2/password@XE file=./flwwback.dmp full=y ignore=y

window杀死某个端口过程

tasklist | findstr 2000taskkill -PID 过程号 -F //强制敞开某个过程
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