基础命令

  1. $ uname
  2. Linux
  4. $ uname -a
  5. Linux localhost 3.10.0-1062.el7.x86_64 #1 SMP Wed Aug 7 18:08:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
  7. $ cat /proc/version
  8. Linux version 3.10.0-1062.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) ) #1 SMP Wed Aug 7 18:08:02 UTC 2019

常用

关闭防火墙

  1. systemctl stop firewalld
  2. systemctl disable firewalld

etc/hosts

hosts文件是Linux系统中一个负责IP地址与域名快速解析的文件，以ASCII格式保存在“/etc”目录下，文件名为“hosts”

  1. 第一部份：网络IP地址；第二部份：主机名或域名；第三部份：主机名别名；
    127.0.0.1 localhost.localdomain localhost
192.168.1.100 linmu100.com linmu100
192.168.1.120 ftpserver ftp120

systemctl