|
|
|
|
|
# **chgrp**
|
|
|
|
|
|
|
|
|
|
|
|
## 说明
|
|
|
|
|
|
|
|
|
|
|
|
**chgrp命令** 用来改变文件或目录所属的用户组。该命令用来改变指定文件所属的用户组。其中，组名可以是用户组的id，也可以是用户组的组名。
|
|
|
|
|
|
文件名可以 是由空格分开的要改变属组的文件列表，也可以是由通配符描述的文件集合。如果用户不是该文件的文件主或超级用户(root)，则不能改变
|
|
|
|
|
|
该文件的组
|
|
|
|
|
|
|
|
|
|
|
|
在UNIX系统家族里，文件或目录权限的掌控以拥有者及所属群组来管理。您可以使用chgrp指令去变更文件与目录的所属群组，设置方式采用群组名称或
|
|
|
|
|
|
群组识别码皆可
|
|
|
|
|
|
|
|
|
|
|
|
## 选项
|
|
|
|
|
|
|
|
|
|
|
|
```markdown
|
|
|
|
|
|
用法：chgrp [选项]... 用户组 文件...
|
|
|
|
|
|
或：chgrp [选项]... --reference=参考文件 文件...
|
|
|
|
|
|
|
|
|
|
|
|
-c, --changes like verbose but report only when a change is made
|
|
|
|
|
|
-f, --silent, --quiet suppress most error messages
|
|
|
|
|
|
-v, --verbose output a diagnostic for every file processed
|
|
|
|
|
|
--dereference affect the referent of each symbolic link (this is
|
|
|
|
|
|
the default), rather than the symbolic link itself
|
|
|
|
|
|
-h, --no-dereference affect symbolic links instead of any referenced file
|
|
|
|
|
|
(useful only on systems that can change the
|
|
|
|
|
|
ownership of a symlink)
|
|
|
|
|
|
--no-preserve-root do not treat '/' specially (the default)
|
|
|
|
|
|
--preserve-root fail to operate recursively on '/'
|
|
|
|
|
|
--reference=RFILE use RFILE's group rather than specifying a
|
|
|
|
|
|
GROUP value
|
|
|
|
|
|
-R, --recursive operate on files and directories recursively
|
|
|
|
|
|
|
|
|
|
|
|
以下选项修改了在指定-R选项时遍历层次结构的方式。 如果指定了多个，则只有最后一个生效
|
|
|
|
|
|
-H if a command line argument is a symbolic link
|
|
|
|
|
|
to a directory, traverse it
|
|
|
|
|
|
-L traverse every symbolic link to a directory
|
|
|
|
|
|
encountered
|
|
|
|
|
|
-P do not traverse any symbolic links (default)
|
|
|
|
|
|
|
|
|
|
|
|
示例：
|
|
|
|
|
|
chgrp staff /u 将 /u 的属组更改为"staff"。
|
|
|
|
|
|
chgrp -hR staff /u 将 /u 及其子目录下所有文件的属组更改为"staff"
|
|
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
## 实例
|
|
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
|
chgrp -R mengxin /usr/meng # 将`/usr/meng`及其子目录下的所有文件的用户组改为mengxin
|
|
|
|
|
|
chgrp newuser ah # 更改文件ah的组群所有者为newuser
|
|
|
|
|
|
|
|
|
|
|
|
```
|
