How can I avoid those annoying copyright notices on login?

The following code in /etc/profile prints the copyright notice only the
very first time a user logs in:

NUMLOGINS=`/etc/last -2 $LOGNAME | wc -l`
[ $NUMLOGINS -lt 2 ] && cat /etc/copyright

And, for /etc/csh.login:

set NUMLOGINS=`/etc/last -2 $LOGNAME | wc -l`
if ( $NUMLOGINS<2 ) cat /etc/copyright

Technically, each user will get the copyright on their first login after
each time the /etc/wtmp file is pruned, but that needn't be often.
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