Thanks a lot.
For a number of years I have had a file in the /etc/cron.hourly directory on the sme server and other Linux distroes.
It has been used to update a dynamic dns address with a file content like this: wget '
http://example.com/opdat.php'
It has worked all the time, but it has produced entries in the root directory that from time to time have had to be flushed out.
The only trix is to set the user rights for the file so that the file can be executed.
I guess the this small mod: "-O /dev/null" will mean something like "send output to device zero" and no more cleaning of the root directory.
I think that the most easy way to set up a cron job on most distroes is to just make a file with the cron job in the /etc/cron.hourly or the /etc/cron.daily directory.
Don't know if it is a recomended sme practice, but it har never given any problems (except for until now all the entries in the root directory.)
It's a okay and simple way to do it, is'n it ? (and the root user should be a ok file owner ?)