centos那些常用命令

本文记录那些常用命令。

防火墙相关

https://havee.me/linux/2015-01/using-firewalls-on-centos-7.html

防火墙的开闭

开放某个端口

firewall-cmd --zone=public --add-port=2888/tcp --permanent
# 重启生效
firewall-cmd --reload

查看开放的所有端口

# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0
  sources:
  services: dhcpv6-client ssh
  ports: 8080/tcp 8088/tcp
  protocols:
  masquerade: no
  forward-ports:
  source-ports:
  icmp-blocks:
  rich rules:

系统相关

查看运行进程

# ps -aux

# ps -aux | grep "java -jar"