The chown(1) command sets the user identifier (ID) and/or
the group ID of the specified files. If file is a symbolic
link, the user ID and/or the group ID of the file referenced by the
symbolic link is changed unless the -h option is used.
Suppress error messages on files where the ownership could not
If file is a symbolic link, change the user ID and/or
the group ID of the symbolic link.
Change the user ID and/or the group ID for the file hierarchies
rooted in the files instead of just the files themselves.
The owner and group operands are both optional;
however, one must be specified. If the group operand is
specified, it must be preceded by a colon (:).
The owner can be specified by either a numeric user ID or
a user name. If a user name is also a numeric user ID, the operand
is used as a user name. The group can be either a numeric
group ID or a group name. If a group name is also a numeric group
ID, the operand is used as a group name.
For security reasons, the ownership of a file can be altered
only by a process with appropriate privileges.