How to use the chown command in Linux


The command chown, an abbreviation of change owner, is used on Unix and Unix-like operating systems to change the owner of file system files, directories.

change the ownership of a file named filename to a new owner named install
chown install filename
chown --help
chown --version
ls -l
-rw-r--r-- 12 root root
|[-][-][-]-  [--] [--]
| |  |  | |   |    |
| |  |  | |   |    +--> 7. Group
| |  |  | |   +-------> 6. Owner
| |  |  | +-----------> 5. Alternate Access Method
| |  |  +-------------> 4. Others Permissions
| |  +----------------> 3. Group Permissions
| +-------------------> 2. Owner Permissions
+---------------------> 1. File Type

Change Ownership of Multiple Linux Files

root will be the new owner of files
chown root file1 file2
With UID
chown 1002 filename
changes the group of the file
chown :group
chown: invalid group: ‘:group’

Check Owner and Group Before Making Changes.

verified the ownership and the group
chown --from=root:group user:group2
chown -R user:group dirname
user group

The syntax for the chown command is as follows:

  chown [OPTION]... [OWNER][:[GROUP]] FILE...
  chown [OPTION]... --reference=RFILE FILE...

change the owner and group of each FILE to those 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
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)
change the owner and/or group of each file only if its current owner and/or group match those specified here. Either may be omitted, in which case a match is not required for the omitted attribute
do not treat '/' specially (the default)
fail to operate recursively on '/'
use RFILE's owner and group rather than specifying OWNER:GROUP values
-R, --recursive
operate on files and directories recursively
if a command line argument is a symbolic link to a directory, traverse it
traverse every symbolic link to a directory encountered
do not traverse any symbolic links (default)
display this help and exit
output version information and exit

Related Tags

#Linux# #chown#