> You could scrape the online manual pages, and make a PDF document from
> that but it would soon be out of date.  Why do you want PDF especially?

Just to make it easier to read instead of going too many html docs become two or three docs 

pdf docs at maximum ,

beside also correct me if I am wrong there is a list of commands that relate to 

clamd daemon that list them and little bit explanation about each command but 

does not specify how to use them whether from the command line or the configuration 

for example in the manual doc mention the following:

"Clamd recognizes the following commands:

       PING   Check the server's state. It should reply with "PONG".

       VERSION
              Print program and database versions.

       RELOAD Reload the virus databases.

       SHUTDOWN
              Perform a clean exit.

       SCAN file/directory
              Scan a file or a directory (recursively) with archive support enabled (if not disabled in clamd.conf). A full path is required."

for example how do I make a clean shutdown for the daemon without killing the process 

and without using any systemctl commands it is not mentioned as far as I noticed

Br 

AK