The following is a demonstration of a script that uses the maybe command.

#!/usr/bin/sh
#
# unlock - unlock a user account. Solaris.
#
# USAGE: unlock username
#
# NOTE: Assumes an account is locked by changing the shell, eg to a 
#  custom script called /usr/bin/locked.

PATH=/usr/sbin:/usr/bin

username=$1
if [ "$username" = "" ]; then
	echo >&2 "USAGE: unlock username"
	exit 1
fi

while :
do
	if maybe
	then
		# unlock the account
		usermod -s /usr/bin/sh $username
	else
		# wait a day
		sleep `expr 24 \* 60 \* 60`
	fi
done