please tell me ,how to install the clock theme,it's so beautiful,but i dont know how to use it .Thanks!

extract the archive and then with root privileges copy the whole directory inside /usr/share/cairo-clock/themes/.

Finally (as root) do:

cd /usr/share/cairo-clock/themes/ && chown -R root:\ RTL-Plus && chmod -R 755 RTL-Plus

Hi, when I put this in the terminal, cd /usr/share/cairo-clock/themes/ && chown -R root:\ RTL-Plus && chmod -R 755 RTL-Plus
chown: missing operand after `root: RTL-Plus'
Try `chown --help' for more information.
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

Owner is unchanged if missing. Group is unchanged if missing, but changed
to login group if implied by a `:' following a symbolic OWNER.
OWNER and GROUP may be numeric as well as symbolic.

Examples:
chown root /u Change the owner of /u to "root".
chown root:staff /u Likewise, but also change its group to "staff".
chown -hR root /u Change the owner of /u and subfiles to "root".
Can you help?
Thanks in advance

pardon my typo, the correct command is

cd /usr/share/cairo-clock/themes/ && chown -R root\: RTL-Plus && chmod -R 755 RTL-Plus


so instead of :\ use \: