The command that I tried are :
sudo apt-get install screenlets
Reading package lists... Done Building dependency tree Reading state information... Done Package screenlets is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source
Is there any other way to install it? I tried Using MacSlow's Cairo-Clock but that widget disappear after random interval of time. Is there anything else out there?