Linux指令- 檔案與使用者權限

檔案權限講解:

drwxr-xr-x  2           tangym            tangym           4096        May 29  2015 Desktop

          [LinkCount]  [CurrentUser]    [CurrentGroup]   [FileSize]  [CreationTime]

Field1: self permission

drwxr-

d:direcory

rwx: read,write,Execute,

Field2: current group's user permission

r-x:

Field3: other group's user permission

r-x

|------Change file owner and workgroup -----|

tangym@ubuntu:~$ mkdir mvhello

tangym@ubuntu:~$ ls -l mvhello

total 0

tangym@ubuntu:~$ ls -l

total 204136

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Desktop

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Documents

drwxr-xr-x  3 tangym tangym         4096 May 14 08:53 Downloads

-rw-r--r--  1 tangym tangym         8445 May 29  2015 examples.desktop

-rw-rw-r--  1 tangym tangym        10240 Jan 20  2011 ez_setup.py

drwxrwxr-x  2 tangym tangym         4096 May 24 23:37 mhydir

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Music

drwxrwxr-x  2 tangym tangym         4096 May 24 23:49 mvhello

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Pictures

-rw-rw-r--  1 tangym tangym            0 May 24 22:42 pse

-rw-rw-r--  1 tangym tangym            0 May 24 23:12 pse2

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Public

drwxrwxr-x  9 tangym tangym         4096 May 14 08:18 pycharm-community-2016.1.3

-rwxrw-rw-  1 tangym tangym    207707566 May 14 08:09 pycharm-community-2016.1.3.tar.gz

drwxrwxr-x  3 tangym tangym         4096 May 14 08:25 PycharmProjects

drwxrwxr-x  6 tangym tangym         4096 May 14 08:55 redis-2.8.12

-rw-rw-r--  1 tangym tangym      1215331 Jun 23  2014 redis-2.8.12.tar.gz

drwxrwxr-x 10 tangym tangym         4096 May 14 08:54 redis-py-master

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Templates

drwxrwxr-x  3 tangym tangym         4096 May 24 23:11 test1

drwxrwxr-x  3 tangym tangym         4096 May 24 22:38 test100

drwxrwxr-x  2 tangym tangym         4096 May 24 22:36 test3

drwxrwxr-x  2 tangym tangym         4096 May 17 21:52 TestFolder

drwxrwxr-x  2 tangym tangym         4096 May 29  2015 Ubuntu One

-rw-rw-r--  1 tangym tangym            0 May 17 21:49 Untitled Document

drwxr-xr-x  2 tangym tangym         4096 May 29  2015 Videos

drwxrwx---  2 lewis  workgroup      4096 May 24 22:25 work

tangym@ubuntu:~$ sudo chown lewis mvhello

[sudo] password for tangym: 

drwxrwxr-x  2 lewis  tangym         4096 May 24 23:49 mvhello

tangym@ubuntu:~$ whatis chgrp

chgrp (1)            - change group ownership

tangym@ubuntu:~$ sudo chgrp workgroup mvhello

drwxrwxr-x  2 lewis  workgroup      4096 May 24 23:49 mvhello

[Example-------Create Users and share group-----]

---Create workgroup----

tangym@ubuntu:~$ sudo groupadd workgroup

[sudo] password for tangym:

---Create four users and password----

tangym@ubuntu:~$ sudo useradd -G workgroup lucy

tangym@ubuntu:~$ sudo passwd lucy 

Enter new UNIX password: 

Retype new UNIX password: 

passwd: password updated successfully

tangym@ubuntu:~$ sudo useradd -G workgroup lewis

tangym@ubuntu:~$ sudo passwd lewis

tangym@ubuntu:~$ sudo useradd -G workgroup mike

tangym@ubuntu:~$ sudo passwd mike

tangym@ubuntu:~$ sudo useradd -G workgroup peter

tangym@ubuntu:~$ sudo passwd peter

Retype new UNIX password:

-----Create direcories

tangym@ubuntu:~$ cd /home

tangym@ubuntu:/home$ sudo mkdir work -- Create direcory

tangym@ubuntu:/home$ sudo chgrp workgroup work -- update a directory belonged group.

tangym@ubuntu:/home$ sudo chmod g+rwx work -- g+  rws: read,write,execute

tangym@ubuntu:/home$ sudo chmod o-rwx work -- o: other, remove other group's permission.

tangym@ubuntu:/home$ sudo chown lewis work -- set the group lead to lewis.

本文轉自 yuanzhitang 51CTO部落格，原文連結：http://blog.51cto.com/yuanzhitang/1783023，如需轉載請自行聯系原作者