Non-interactive shell and /dev/null

[Try KDE <trykde@rogers.com>]

Hi Everyone,

I noticed some shell script, for example  those under /etc/cron.*/, uses 
"command > /dev/null" style. I think it's because they know the scripts 
is run under non-interactive shell. My question is, what would happen if 
">/dev/null" is removed and the command tries to print something to 
"standand out" (who knows where it is :)  Will that cause real trouble 
or simply leaves mess on some virtual console?

Thanks,
-tk.