The Chown of Linux

Command function:

Chown the owner of the specified file to the specified user or group, the user can be either a user name or a user ID; a group can be a group name or a group ID; a file is a space-separated list of files to change permissions, and wildcard characters are supported. System administrators often use the Chown command to give users permission to use a file after copying it to another user's directory.

Command format:

--reference=rfile FILE ...

Command parameters:-c,--changes only outputs the information of the changed file-f,--silent,--quiet when Chown cannot change the file mode, the user who does not notify the file--help output help information. -r,--recursive can recursively traverse subdirectories, change the changes to all files and subdirectories in the directory--reference=filename refer to the permissions of filename to set permissions-v,--verbose regardless of whether the modification is successful, output the information for each file-Hrelated to symbolic links, to be continued ..
-Hrelated to symbolic links, to be continued ...
-Lrelated to symbolic links, to be continued ...
-Prelated to symbolic links, to be continued ...--version output version information. --reference=< directory or File > set to have the same permissions as the specified directory or file
--version Display version Information Command instance:

Assume that the file information in the directory is:

[Email protected]:~/test$ lltotal ADRWXRWXR-X3Vbird Vbird4096September8  -: the./drwxr-xr-x4Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Vbird Vbird0September8  -: thea.txt-rw-rw-r--1Vbird Vbird0September8  -: theB.TXTDRWXRWXR-X2Vbird Vbird4096September8  -: -dir/

1. Change the owner and group. Change the owner of the a.txt to root and the group to the root group.

[Email protected]:~/test$ su//The root user is required to modify file permissionsPassword:[email protected]:/home/vbird/test# lltotal ADRWXRWXR-X3Vbird Vbird4096September8  -: the./drwxr-xr-x4Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Vbird Vbird0September8  -: thea.txt-rw-rw-r--1Vbird Vbird0September8  -: theB.TXTDRWXRWXR-X2Vbird Vbird4096September8  -: -dir/[email protected]:/home/vbird/test# chown root:root a.txt[email protected]:/home/vbird/test# lltotal ADRWXRWXR-X3Vbird Vbird4096September8  -: the./drwxr-xr-x4Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Root root0September8  -: thea.txt-rw-rw-r--1Vbird Vbird0September8  -: theB.TXTDRWXRWXR-X2Vbird Vbird4096September8  -: -dir/[email protected]:/home/vbird/test# exitexit[email protected]:~/test$

2. Change the owner and group of all files in the specified directory and its subdirectories. Change the dir directory and all the file owners under dir/to root and the group to the root group.

[Email protected]:~/test$ lltotal ADRWXRWXR-X3Vbird Vbird4096September8  -: the./drwxr-xr-x4Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Vbird Vbird0September8  -: thea.txt-rw-rw-r--1Vbird Vbird0September8  -: theB.TXTDRWXRWXR-X2Vbird Vbird4096September8  -: -dir/[email protected]:~/test$ ll Dirtotal8DRWXRWXR-X2Vbird Vbird4096September8  -: -./DRWXRWXR-X3Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Vbird Vbird0September8  -: -C.txt-rw-rw-r--1Vbird Vbird0September8  -: -D.txt[email protected]:~/test$ supassword:[email protected]:/home/vbird/test# Chown Root:root-R dir[email protected]:/home/vbird/test# lltotal ADRWXRWXR-X3Vbird Vbird4096September8  -: the./drwxr-xr-x4Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Vbird Vbird0September8  -: thea.txt-rw-rw-r--1Vbird Vbird0September8  -: theB.TXTDRWXRWXR-X2Root root4096September8  -: -dir/[email protected]:/home/vbird/test# ll Dirtotal8DRWXRWXR-X2Root root4096September8  -: -./DRWXRWXR-X3Vbird Vbird4096September8  -: the.. /-rw-rw-r--1Root root0September8  -: -C.txt-rw-rw-r--1Root root0September8  -: -D.txt[email protected]:/home/vbird/test# exitexit[email protected]:/home/vbird/test#

The Chown of Linux