文件夹权限

 

sticky 冒险位(黏贴位)

限定:只作用于目录
功能:任何人都可以在一个目录下建立文件,却只有root 和建立者本人才可以删除文件
特征:在other 位的x 显示为T 或t,t 代表包含了x 权限,T 代表未包含x 权限

[root@localhost ~]# ls -lrt / |grep tmp drwxrwxrwt.
 8 root  root  94208  8月 30 17:53 tmp

[root@localhost data]# chmod o+xt temp/
[root@localhost data]# ll
总用量 4
d--------t 4 root root 4096  8月 30 17:38 temp
[root@localhost data]# chmod o-xt temp/
[root@localhost data]# chmod o+t temp/
[root@localhost data]# ll
总用量 4
d--------T 4 root root 4096  8月 30 17:38 temp
[root@localhost data]# clear
[root@localhost data]#

[root@localhost ~]# useradd A
[root@localhost ~]# useradd B
[A@localhost ~]$ cd /home/
[A@localhost home]$ ls -lrt
total 36
drwx------  4 A     A      4096 Aug 30 17:01 A
drwx------  4 B     B      4096 Aug 30 17:01 B
[A@localhost home]$ chmod o+r A/
[A@localhost home]$ ls -lrt
total 36
drwx---r--  4 A     A      4096 Aug 30 17:01 A
drwx------  4 B     B      4096 Aug 30 17:01 B
[A@localhost home]$ exit
logout

[root@localhost ~]# su - B
[B@localhost ~]$ ls -lart /home/A/
ls: cannot access /home/A/.mozilla: Permission denied
ls: cannot access /home/A/..: Permission denied
ls: cannot access /home/A/.gnome2: Permission denied
ls: cannot access /home/A/.: Permission denied
ls: cannot access /home/A/.bash_profile: Permission denied
ls: cannot access /home/A/.bashrc: Permission denied
ls: cannot access /home/A/.bash_logout: Permission denied
ls: cannot access /home/A/.bash_history: Permission denied
total 0
d????????? ? ? ? ?            ? .mozilla
d????????? ? ? ? ?            ? .gnome2
-????????? ? ? ? ?            ? .bashrc
-????????? ? ? ? ?            ? .bash_profile
-????????? ? ? ? ?            ? .bash_logout
-????????? ? ? ? ?            ? .bash_history
d????????? ? ? ? ?            ? ..
d????????? ? ? ? ?            ? .
[B@localhost ~]$ cd /home/A/
-bash: cd: /home/A/: Permission denied
[B@localhost ~]$exit
logout


[root@localhost ~]# su - A
[A@localhost ~]$ cd /home/
[A@localhost home]$ ls -lrt
total 36
drwx---r--  4 A     A      4096 Aug 30 17:01 A
drwx------  4 B     B      4096 Aug 30 17:01 B
[A@localhost home]$ chmod o+x A/
[A@localhost home]$ ls -lrt
total 36
drwx---r-x  4 A     A      4096 Aug 30 17:01 A
drwx------  4 B     B      4096 Aug 30 17:01 B
[A@localhost home]$ exit
logout


[root@localhost ~]# su - B
[B@localhost ~]$ cd /home/A/
[B@localhost A]$ ls -lart
total 32
drwxr-xr-x  2 A    A    4096 Nov 12  2010 .gnome2
-rw-r--r--  1 A    A     124 May 30  2011 .bashrc
-rw-r--r--  1 A    A     176 May 30  2011 .bash_profile
-rw-r--r--  1 A    A      18 May 30  2011 .bash_logout
drwxr-xr-x  4 A    A    4096 Dec 15  2011 .mozilla
drwxr-xr-x. 7 root root 4096 Aug 30 16:59 ..
drwx---r-x  4 A    A    4096 Aug 30 17:01 .
-rw-------  1 A    A     200 Aug 30 17:12 .bash_history
[B@localhost A]$
总结：针对于目录，其他用户必须有X执行权限，才可以进入目录并浏览目录中的文件。