[course notes] get started with Linux quickly and play with typical applications -- mooc.com (Linux basic configuration)

Today we're going to update the Linux introductory course at the same time. Before, I have been studying Linux for a while, but the research is not very thorough. Here is the Linux video of Mogao network, which is just in WeChat's official account. It just started learning.
The whole video is based on CentOS 7. In order to be consistent with the video course, I use VirtualBox to install. Although my parallel desktop is also available under Mac OS, it is consistent with the course.

In this case, Linux is installed with Minimum, only in the form of command line.
In addition, because I use the Mac OS system, XShell command-line software is not supported. Here, after my attempt, I find an excellent domestic software FinalShell that can achieve almost the same functions as XShell, and can replace XShell in the Mac OS System for operation. Strong Amway.

The main SSH operation process of the following courses is written directly below:

Successful connection
Last login: Mon Apr 16 06:56:30 2018
[root@localhost ~]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.114  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::a7cc:ad45:300c:bbfe  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:9d:62:ed  txqueuelen 1000  (Ethernet)
        RX packets 887  bytes 77760 (75.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 783  bytes 103340 (100.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 4  bytes 340 (340.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4  bytes 340 (340.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@localhost ~]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.114  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::a7cc:ad45:300c:bbfe  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:9d:62:ed  txqueuelen 1000  (Ethernet)
        RX packets 2077  bytes 167670 (163.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1837  bytes 229744 (224.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 4  bytes 340 (340.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4  bytes 340 (340.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@localhost ~]# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 
[root@localhost ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
[root@localhost ~]# wget
-bash: wget: Command not found
[root@localhost ~]# 
[root@localhost ~]# 
[root@localhost ~]# yum install wget
Plug in loaded: fastestmirror
Loading mirror speeds from cached hostfile
There are no enabled repos.
 Run "yum repolist all" to see the repos you have.
 To enable Red Hat Subscription Management repositories:
     subscription-manager repos --enable <repo>
 To enable custom repositories:
     yum-config-manager --enable <repo>
[root@localhost ~]# yum install wget
Plug in loaded: fastestmirror
Loading mirror speeds from cached hostfile
There are no enabled repos.
 Run "yum repolist all" to see the repos you have.
 To enable Red Hat Subscription Management repositories:
     subscription-manager repos --enable <repo>
 To enable custom repositories:
     yum-config-manager --enable <repo>
[root@localhost ~]# wget
-bash: wget: Command not found
[root@localhost ~]# wget
-bash: wget: Command not found
[root@localhost ~]# yum install wget
Plug in loaded: fastestmirror
Loading mirror speeds from cached hostfile
There are no enabled repos.
 Run "yum repolist all" to see the repos you have.
 To enable Red Hat Subscription Management repositories:
     subscription-manager repos --enable <repo>
 To enable custom repositories:
     yum-config-manager --enable <repo>
[root@localhost ~]#  mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
mv: Unable to obtain"/etc/yum.repos.d/CentOS-Base.repo" File status for(stat): There is no file or directory
[root@localhost ~]#  mv /etc/yum.repos.d/CentOS-Base.repo.backup /etc/yum.repos.d/CentOS-Base.repo
[root@localhost ~]# yum install wget
Plug in loaded: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving dependencies
--> Checking transactions
---> software package wget.x86_64.0.1.14-15.el7_4.1 Will be installed
--> Resolve dependency complete

Dependency resolution

========================================================================================
 Package         Framework              Edition                        source                  Size
========================================================================================
Installing:
 wget            x86_64            1.14-15.el7_4.1             updates            547 k

Transaction summary
========================================================================================
install  1 software package

Total downloads:547 k
 Installation size:2.0 M
Is this ok [y/d/N]: y
Downloading packages:
wget-1.14-15.el7_4.1.x86_64.rpm                                  | 547 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing    : wget-1.14-15.el7_4.1.x86_64                                         1/1 
  Verification      : wget-1.14-15.el7_4.1.x86_64                                         1/1 

already installed:
  wget.x86_64 0:1.14-15.el7_4.1                                                         

Complete!
[root@localhost ~]#  mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
--2018-04-16 07:10:33--  http://mirrors.163.com/.help/CentOS7-Base-163.repo
 Resolving host mirrors.163.com (mirrors.163.com)... 59.111.0.251
on connection mirrors.163.com (mirrors.163.com)|59.111.0.251|:80... Connected.
Already issued HTTP Request, waiting for response... 200 OK
 Length:1572 (1.5K) [application/octet-stream]
Saving to: "CentOS7-Base-163.repo"

100%[==============================================>] 1,572       --.-K/s Use time 0s      

2018-04-16 07:10:33 (208 MB/s) - Saved“ CentOS7-Base-163.repo" [1572/1572])

[root@localhost yum.repos.d]# yum clean all
Plug in loaded: fastestmirror
 Cleaning up software sources: base extras updates
Cleaning up everything
Cleaning up list of fastest mirrors
[root@localhost yum.repos.d]# yum makecache
Plug in loaded: fastestmirror
base                                                             | 3.6 kB  00:00:00     
extras                                                           | 3.4 kB  00:00:00     
updates                                                          | 3.4 kB  00:00:00     
(1/12): base/7/x86_64/group_gz                                   | 156 kB  00:00:00     
(2/12): base/7/x86_64/primary_db                                 | 5.7 MB  00:00:00     
(3/12): base/7/x86_64/filelists_db                               | 6.7 MB  00:00:00     
(4/12): base/7/x86_64/other_db                                   | 2.5 MB  00:00:00     
(5/12): extras/7/x86_64/filelists_db                             | 709 kB  00:00:00     
(6/12): extras/7/x86_64/primary_db                               | 185 kB  00:00:00     
(7/12): extras/7/x86_64/other_db                                 | 121 kB  00:00:00     
(8/12): updates/7/x86_64/prestodelta                             | 960 kB  00:00:00     
(9/12): updates/7/x86_64/primary_db                              | 6.9 MB  00:00:00     
(10/12): updates/7/x86_64/filelists_db                           | 4.2 MB  00:00:00     
(11/12): updates/7/x86_64/other_db                               | 734 kB  00:00:00     
(12/12): extras/7/x86_64/prestodelta                             | 129 kB  00:00:01     
Determining fastest mirrors
 Metadata cache established
[root@localhost yum.repos.d]# yum install vim
Plug in loaded: fastestmirror
Loading mirror speeds from cached hostfile
 software package 2:vim-enhanced-7.4.160-2.el7.x86_64 Installed and up to date
 No processing required
[root@localhost yum.repos.d]# yum install vim
Plug in loaded: fastestmirror
Loading mirror speeds from cached hostfile
 software package 2:vim-enhanced-7.4.160-2.el7.x86_64 Installed and up to date
 No processing required
[root@localhost yum.repos.d]# ls
CentOS7-Base-163.repo    CentOS-Debuginfo.repo  CentOS-Sources.repo
CentOS-Base.repo.backup  CentOS-fasttrack.repo  CentOS-Vault.repo
CentOS-CR.repo           CentOS-Media.repo
[root@localhost yum.repos.d]# vim /etc/sysconfig/network-scripts/ifcfg-enp0s3 
[root@localhost yum.repos.d]# 
[root@localhost yum.repos.d]# 
[root@localhost yum.repos.d]# 
[root@localhost yum.repos.d]# 
[root@localhost yum.repos.d]# 
[root@localhost yum.repos.d]#

Keywords: yum CentOS Linux vim

Added by vsego on Thu, 02 Apr 2020 08:34:33 +0300

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[course notes] get started with Linux quickly and play with typical applications -- mooc.com (Linux basic configuration)

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