CentOS7.2 基本操作
虚拟机⽤户界⾯防⽌⿊屏:settings-电源和隐私-关闭屏保和⾃锁
openjdk的jmap安装: yum install java-1.8.0-openjdk-devel
netstat -lnpt 查看端⼝占⽤情况(TCP)
netstat -lnp | grep XXXX 查看端⼝/进程号占⽤情况
jps -lv | grep -v xyz 查看java所占⽤的进程(不包含xyz)
jps -lv | grep xyz 查看java所占⽤的进程(包含xyz)
ifconfig | grep "inet " | grep -v 127.0.0.1 查看本机IP地址
CentOS7.2 ssh操作
ssh登录退出
ssh -p 9091 [email protected] 登录
logout 或者 exit 退出
ssh⽂件传输
服务器⽂件到本地⽬录
scp [email protected]:/home/gsafety/test.jar /usr/local/jiangsu
服务器⽂件夹到本地⽬录
scp -r [email protected]:/home/gsafety/bigScreen /usr/local/jiangsu
scp -r -P 9091 [email protected]:/opt/atlassian-extras-2.4.jar /Users/Fang/Downloads
本地⽂件到服务器⽬录
scp -P 9091 hg.war [email protected]:/usr/local (!!注意端⼝P要⼤写)
CentOS7.2 防⽕墙命令
systemctl start firewalld.service 启动
systemctl stop firewalld.service 关闭
systemctl restart firewalld.service 重启
systemctl enable firewalld.service 开机时启⽤
systemctl disable firewalld.service 开机时禁⽤
systemctl is-enabled firewalld.service 是否开机启动
firewall-cmd --zone=public --list-ports 查看所有打开的端⼝
firewall-cmd --state 查看防⽕墙状态
firewall-cmd --zone=public --add-port=80/tcp --permanent 添加端⼝
firewall-cmd --reload 重新载⼊
firewall-cmd --zone=public --query-port=80/tcp 查看端⼝
firewall-cmd --zone=public --remove-port=80/tcp --permanent 删除端⼝