linux chgrp 命令介绍和使用案例
chgrp 命令是 Linux 系统中用于更改文件和目录的组所有权的工具。它允许用户修改文件或目录所属的组，从而影响对这些文件的访问权限
基本语法bashchgrp [选项] new_group file/directorynew_group：要更改为的新组名。file/directory：要更改组所有权的文件或目录。常用选项-R：递归地更改目录及其内容的组所有权。--reference=RFILE：使用参考文件的组来设置目标文件的组。-v：显示详细信息，列出更改的文件。-f：在发生错误时不显示错误信息。命令：
root@meng:~# which chgrp
/usr/bin/chgrp
root@meng:~# chgrp -h
chgrp: missing operand
Try 'chgrp --help' for more information.
root@meng:~# chgrp --help
Usage: chgrp [OPTION]... GROUP FILE...
or: chgrp [OPTION]... --reference=RFILE FILE...
Change the group of each FILE to GROUP.
With --reference, change the group of each FILE to that of RFILE.
-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
The following options modify how a hierarchy is traversed when the -R
option is also specified. If more than one is specified, only the final
one takes effect.
-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)
--help display this help and exit
--version output version information and exit
Examples:
chgrp staff /u Change the group of /u to "staff".
chgrp -hR staff /u Change the group of /u and subfiles to "staff".
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
Full documentation <https://www.gnu.org/software/coreutils/chgrp>
or available locally via: info '(coreutils) chgrp invocation'
命令介绍：
root@meng:~# chgrp -v meng meng.txt.bz2
changed group of 'meng.txt.bz2' from root to meng
root@meng:~# ls -al meng.txt.bz2
-rw-r--r-- 1 root meng 174 Aug 13 09:21 meng.txt.bz2
