Linux入門-命令練習 20210116

時間 2021-01-17

標籤 html linux centos bash dom ide post centos7 spa 3d 欄目 Linux 简体版

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Linux入門-命令練習 20210116

將SELNUX=enforcing改成SELNUX=disabledhtml

root@centos7 ~]# nano /etc/selinux/config 配置文件，將SELNUX=enforcing改成SELNUX=disabled linux

[root@centos7 ~]# getenforce （#Enforcing：強制模式。表明SELinux在運行中，且已經開始限制domain/type之間的驗證關係）
Enforcing
[root@centos7 ~]# cat /etc/selinux/config （#查看配置文件）

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=enforcing
# SELINUXTYPE= can take one of three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted 


[root@centos7 ~]# nano /etc/selinux/config（#nano編輯配置文件） -bash: nano: command not found
[root@centos7 ~]# yum -y install nano（#安裝nano）
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: ftp.sjtu.edu.cn
 * extras: ftp.sjtu.edu.cn
 * updates: ftp.sjtu.edu.cn
base                                                                                                   | 3.6 kB  00:00:00     
extras                                                                                                 | 2.9 kB  00:00:00     
updates                                                                                                | 2.9 kB  00:00:00     
updates/7/x86_64/primary_db                                                                            | 4.7 MB  00:00:01     
Resolving Dependencies
--> Running transaction check
---> Package nano.x86_64 0:2.3.1-10.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================
 Package                    Arch                         Version                             Repository                  Size
==============================================================================================================================
Installing:
 nano                       x86_64                       2.3.1-10.el7                        base                       440 k

Transaction Summary
==============================================================================================================================
Install  1 Package

Total download size: 440 k
Installed size: 1.6 M
Downloading packages:
nano-2.3.1-10.el7.x86_64.rpm                                                                           | 440 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : nano-2.3.1-10.el7.x86_64                                                                                   1/1 
  Verifying  : nano-2.3.1-10.el7.x86_64                                                                                   1/1 

Installed:
  nano.x86_64 0:2.3.1-10.el7                                                                                                  

Complete!
[root@centos7 ~]# nano /etc/selinux/config（#nano編輯配置文件）
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled（#此處模式已變）
# SELINUXTYPE= can take one of three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected. 
# mls - Multi Level Security protection.
SELINUXTYPE=targeted

[root@centos7 ~]# ll anaconda-ks.cfg 
-rw-------. 1 root root 1259 Dec  3 20:30 anaconda-ks.cfg
[root@centos7 ~]# ll -Z anaconda-ks.cfg 
-rw-------. root root system_u:object_r:admin_home_t:s0 anaconda-ks.cfg

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targetedcentos

----------------------------------------------------bash

關閉防火牆:dom

[root@centos7 ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

[root@centos8 ~]# systemctl disable firewalld
[root@centos8 ~]#

更改文件的全部人和屬組 ide

 1 [root@centos8 ~]# touch f1.txt(#建立文件)
 2 [root@centos8 ~]# ll（#看看列表）
 3 total 4
 4 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Desktop
 5 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Documents
 6 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Downloads
 7 -rw-r--r--  1 root root    0 Jan 17 00:06 f1.txt （#建立成功）  8 -rw-r--r--. 1 root root 1778 Jan 11 17:12 initial-setup-ks.cfg
 9 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Music
10 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Pictures
11 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Public
12 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Templates
13 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Videos
14 [root@centos8 ~]# chown kevin f1.txt(#改變全部者屬性)
15 [root@centos8 ~]# ll
16 total 4
17 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Desktop
18 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Documents
19 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Downloads
20 -rw-r--r--  1 kevin root    0 Jan 17 00:06 f1.txt 21 -rw-r--r--. 1 root  root 1778 Jan 11 17:12 initial-setup-ks.cfg
22 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Music
23 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Pictures
24 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Public
25 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Templates
26 drwxr-xr-x. 2 root  root    6 Jan 13 23:27 Videos
27 [root@centos8 ~]# chown :kevin f1.txt（#改變屬組屬性）
28 [root@centos8 ~]# ll
29 total 4
30 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Desktop
31 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Documents
32 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Downloads
33 -rw-r--r--  1 kevin kevin    0 Jan 17 00:06 f1.txt 34 -rw-r--r--. 1 root  root  1778 Jan 11 17:12 initial-setup-ks.cfg
35 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Music
36 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Pictures
37 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Public
38 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Templates
39 drwxr-xr-x. 2 root  root     6 Jan 13 23:27 Videos

最後檢查一下結果：post

[root@centos8 ~]# ll f1.txt
-rw-r--r-- 1 kevin kevin 0 Jan 17 00:06 f1.txt
[root@centos8 ~]# centos7

也能夠這樣改：spa

1 [root@centos8 ~]# ll f1.txt
2 -rw-r--r-- 1 kevin kevin 0 Jan 17 00:06 f1.txt
3 [root@centos8 ~]# chown root.bin f1.txt 4 [root@centos8 ~]# ll f1.txt
5 -rw-r--r-- 1 root bin 0 Jan 17 00:06 f1.txt
6 [root@centos8 ~]#

範例：3d

 #chown --reference=f1.txt f2.txt（#像建立f1那樣建立f2）

 1 [root@centos8 ~]# cp /etc/issue f2.txt（#建立f2）
 2 [root@centos8 ~]# ll（#列出詳細，看到f2，txt已成功建立）
 3 total 8
 4 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Desktop
 5 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Documents
 6 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Downloads
 7 -rw-r--r--  1 root bin     0 Jan 17 00:06 f1.txt
 8 -rw-r--r--  1 root root   23 Jan 17 00:31 f2.txt  9 -rw-r--r--. 1 root root 1778 Jan 11 17:12 initial-setup-ks.cfg
10 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Music
11 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Pictures
12 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Public
13 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Templates
14 drwxr-xr-x. 2 root root    6 Jan 13 23:27 Videos

[root@centos8 ~]# chown --re
--recursive  --reference  
[root@centos8 ~]# chown --reference=f1.txt f2.txt（#像建立f1那樣建立f2）

[root@centos8 ~]# ll
total 8

drwxr-xr-x. 2 root root    6 Jan 13 23:27 Desktop
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Documents
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Downloads
-rw-r--r--  1 root bin     0 Jan 17 00:06 f1.txt -rw-r--r--  1 root bin    23 Jan 17 00:31 f2.txt -rw-r--r--. 1 root root 1778 Jan 11 17:12 initial-setup-ks.cfg
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Music
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Pictures
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Public
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Templates
drwxr-xr-x. 2 root root    6 Jan 13 23:27 Videos

　　[root@centos8 ~]# chgrp root f1.txt （#只改變屬組，不改全部人）

[root@centos8 ~]# ll f1.txt#查看一下）
-rw-r--r-- 1 root root 0 Jan 17 00:06 f1.txt
[root@centos8 ~]#

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