当前位置:网站首页>Rhcsa Road
Rhcsa Road
2022-07-06 20:17:00 【Omniscient magical conch】
The first day
Install the virtual machine and RHEL The requirements of :
1. Do not install security software
2. Make sure window 64 position Not educational
file system ( A method and data structure for organizing files on disk ) ntfs ---- The maximum number of single files supported is 4TB fat32 ---- The largest single file supported is 4G
3. Enable virtual machine prompt VT-X Did not open ( The physical machine does not have virtualization enabled )
Environment deployment system installation :
Virtual platform (vmware-workstation)+ Create a virtual machine +RHEL-server-8.5-x86_64.iso( Image file )
( Network mode selection - Host only nat* The bridge ; Disk type ide sata scsi nvme*)
Log in to the main user name and password to verify
linux System administrator Default root user ----- The later Login Host logs in through the administrator
Ordinary users redhat
Log in as Administrator —— After creating an account , On the login screen , Click on the not listed ?, User name is root, The password was created before .
Be careful : Judge whether the command is successful , The first method returns to the next command prompt without any prompt The second type has corresponding command result prompt
Pay attention to the meaning of version number ——
1.0~2.6 Previous version :A.B.C
RHEL8.2
A-- Major version number with significant changes ;
B-- Minor version number with some major modifications
C-- It refers to the amendment number with minor revision ,C Development version for odd numbers , Even numbers are stable
1. Look at the host ip Address
command —— ifconfig perhaps ip a
#ip a ==ip addr
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:0c:29:c3:cf:a9 brd ff:ff:ff:ff:ff:ff
inet 192.168.220.162/24 brd 192.168.220.255 scope global dynamic ens160
valid_lft 1710sec preferred_lft 1710sec
notes : use xshell Connect Linux—— stay xshell Internal input ssh+ host ip, for example ssh 192.168.10. 129, You can connect it ip The address is 192.168.10.129 The host
2. terminal ( Standard input and output devices keyboard, mouse, display )
command —— tty View the device file of the current terminal
Virtual terminal :ctrl+alt+F3 ~ F6 ctrl +alt+F2 /dev/tty3 /dev/tty4
Analog terminal : Graphical simulation of the terminal window
Remote terminal : Pseudo terminal Terminal window based on remote connection through remote software /dev/pts/0 /dev/pts/1 ...
Physical terminals
3. The command prompt of the terminal
[[email protected] ~]#
user name @ Host name current path ~ The tag is when the user's home directory /root # Tag manager
notes : Catalog ----window Folder
[[email protected] ~]$ pwd (print workdoing directory Print current directory path )
/home/redhat
redhat ~ The mark is /home/redhat $ Mark ordinary users
4. The standard format of the command
1.# command #ifconfig
2.# command Parameters #ip a
3.# command - Options ... #ls -l #ls -a
4.# command - Options ... Parameters #ls -l /root
-l Short options
--long Long options
5. Basic commands
#ip a see ip Address
#ifconfig see ip Address
#tty View the device file name of the current terminal
#cat /etc/redhat-realse View operating system release information
#uname -r View kernel version
#pwd Show current directory path
#hostname View the current full hostname
#hostname HOSTNAME Temporarily change the host name while the current host is running . After changing the host name of the terminal prompt device, you need to exit and log in again
#hostnamectl set-hostname HOSTNAME vim /etc/hostname Change host name permanently
#passwd [USERNAME] Change or set the user's password
#passwd -d [USERNAME] Delete user password
notes :
Management execution passwd: You can specify a user name ; Don't enter the previous password ; You can change and delete the passwords of all users ; There are no strict requirements for password level
Common user execution passwd: You cannot access the specified user name. You can only change your own password ; You need to enter the previous password ; There are strict requirements for password registration
6. System password reset
1. Restart the client
2. Quickly click the mouse in the startup interface and click the up and down buttons to switch ( Stay in the startup interface )+e
3. find linux Add... At the end of the line at the beginning of the line ------rd.break------ crtl + x ------- mount -o remount,rw /sysroot ----chroot /sysroot -----passwd root ----touch /.autorelabel ---exit ---exit
边栏推荐
- Digital triangle model acwing 1018 Minimum toll
- 22-07-05 七牛云存储图片、用户头像上传
- Introduction of Xia Zhigang
- Redisson bug analysis
- Maximum likelihood estimation and cross entropy loss
- 腾讯字节等大厂面试真题汇总,网易架构师深入讲解Android开发
- Linear distance between two points of cesium
- 技术分享 | 抓包分析 TCP 协议
- 爬虫(14) - Scrapy-Redis分布式爬虫(1) | 详解
- Unity making plug-ins
猜你喜欢
02 basic introduction - data package expansion
Example of shutter text component
5. Nano - Net in wireless body: Top 10 "is it possible?" Questions
22-07-05 七牛云存储图片、用户头像上传
Introduction of Xia Zhigang
BeagleBoneBlack 上手记
Tencent T3 teaches you hand in hand. It's really delicious
Standardized QCI characteristics
Vscode debug run fluent message: there is no extension for debugging yaml. Should we find yaml extensions in the market?
01 basic introduction - concept nouns
随机推荐
Synchronization of data create trigger synchronization table for each site
句号压缩过滤器
JS implementation force deduction 71 question simplified path
数字三角形模型 AcWing 1018. 最低通行费
Catch ball game 1
HDU 1026 Ignatius and the Princess I 迷宫范围内的搜索剪枝问题
数据的同步为每个站点创建触发器同步表
Web开发小妙招:巧用ThreadLocal规避层层传值
Special topic of rotor position estimation of permanent magnet synchronous motor -- Summary of position estimation of fundamental wave model
Tencent architects first, 2022 Android interview written examination summary
B-杰哥的树(状压树形dp)
POJ 3207 Ikki&#39; s Story IV – Panda&#39; s Trick (2-SAT)
Deep learning classification network -- zfnet
微信小程序常用集合
永磁同步电机转子位置估算专题 —— 基波模型与转子位置角
新一代垃圾回收器—ZGC
解剖生理学复习题·VIII血液系统
Method keywords deprecated, externalprocname, final, forcegenerate
Tencent Android development interview, basic knowledge of Android Development
JMeter server resource indicator monitoring (CPU, memory, etc.)