Linux Learnning

1. what is the IP address and network card

a. network card is a kind of hardware device that have the duty to make computer communite each other.

b. IP is the address inseted int he network

if the phone is computer, network card is like SIM card, and the IP is like phone number.

the name of netwrok card is just a mark and not the key ,and the key is the cooresponding address !

2. ifconfig and ping
ifconfig order / command is used for checking and config the configeration information of netwrok card.

ifconfig | grep inet (give the )
ping check the connection to the target IP address,

ping IP address / ping 127.0.01 (check local nerwork card)

SSH /SCP

Data transmission is encrypted to prevent information leakage.

Data transmission is compressed, which can improve transmission speed.

域名,端口号 IP address

域名是IP address 的别名,方便记忆 (www.itcast.cn

so, ping + domin name

send a data package with the 56 bytes, and receive 64 bytes from the other computer which you are commucate with the Ip addresss of 220.181.112.244, and cosuming time is "time = 2.08 ms"

端口号: 找到服务器上运行的应用程序

SSH: [-p port] user@remote

ssh -X (需要图传配置选项)

scp -P port file1 user@remote:

scp -P 22 -r user@remote:Desktop 复制文件夹

文件和文件夹的transmition direction is From firest file to secontd file.

相关推荐
czhc11400756633 分钟前
Linux 76 rsync
linux·运维·python
szxinmai主板定制专家1 小时前
【精密测量】基于ARM+FPGA的多路光栅信号采集方案
服务器·arm开发·人工智能·嵌入式硬件·fpga开发
你不知道我是谁?1 小时前
负载均衡--四层、七层负载均衡的区别
运维·服务器·负载均衡
蓝易云1 小时前
Qt框架中connect()方法的ConnectionType参数使用说明 点击改变文章字体大小
linux·前端·后端
dyj0951 小时前
【Rancher Server + Kubernets】- Nginx-ingress日志持久化至宿主机
运维·nginx·rancher
花落已飘2 小时前
多线程 vs 异步
linux·网络·系统架构
PanZonghui2 小时前
Centos项目部署之Nginx部署项目
linux·nginx
九丝城主2 小时前
2025使用VM虚拟机安装配置Macos苹果系统下Flutter开发环境保姆级教程--中篇
服务器·flutter·macos·vmware
码出钞能力3 小时前
linux内核模块的查看
linux·运维·服务器
星辰云-3 小时前
# Linux Centos系统硬盘分区扩容
linux·运维·centos·磁盘扩容