echo "ulimit -v 2000000 -t 1200; ./isprime 65535" > cmds.sh
echo "ulimit -v 2000000 -t 1200; ./isprime 65537" >> cmds.sh
# create an initial database, but do not work
echo "ulimit -v 2000000 -t 1200; ./isprime 65535" > cmds.sh
echo "ulimit -v 2000000 -t 1200; ./isprime 65537" >> cmds.sh
# create an initial database, but do not work