linux chgrp命令详解

chgrp为change group的缩写,用于改变一个文件的所属用户组. 文件所属用户组必须是在/etc/group文件中记录的合法用户组. chgrp命令常用格式如下所示:
[root@initroot ~]# chgrp [-R] 用户组名 文件或目录 
                [root@initroot ~]# chgrp root
                [root@initroot ~]# ls -al
                -rwxrw-r--   3 peter root  4096 Dec 17 19:52

chgrp是change group的缩写,用于改变文件的所属用户组。要修改的组名必须是/etc/group中记录的用户组,否则会提示错误。


chgrp [-R] groupname filename/dirname
chgrp www initroot.html
chgrp -R www initroot

chgrp [OPTION]... GROUP FILE...
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
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: Full documentation at: or available locally via:
info '(coreutils) chgrp invocation'


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