There are times when we do not want our scripts or programs to outputy any kind of message to the standard output – like for instance if we have multiple scripts in our crontabs. If you didn’t have your crontab configured in such a way that it automatically shoots you an email if something is shown on one of its outputs, but you indeed have at least some kind of a function implemented within your script to alert you in one for of another, than silencing the output is somewhat sensible.
Either way, to employ a pseudo force silent mode run your scripts/programs like this:
/path/to/my_script.sh 2&>1
Remember to only hide the output if you are definately sure thar you don’t need to see it!