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Using this corrected version of the script and entering 134 gives the expected result of the greater than 20 case. The greater than 121 case is unreachable because any age greater than 121 will be caught by the greater than 20 case. To fix, swap the order of the 121 and 20 tests.
Code:
#!/bin/bash
#
echo "Age Check"
echo
echo -n "Enter customer's age: "
read age
echo
echo -n "Customer's age: "
echo $age
echo
if [ ${age} -lt 13 ]
then
echo "Allowed ratings: G '&' PG"
elif [ ${age} -lt 17 ]
then
echo "Allowed ratings: G, PG '&' PG-13"
elif [ ${age} -lt 21 ]
then
echo "Allowed ratings: G, PG, PG-13 '&' R"
elif [ ${age} -gt 20 ]
then
echo "Allowed ratings: G, PG, PG-13, R '&' X"
elif [ ${age} -gt 121 ]
then
echo "DEAD"
fi
echo
echo "End Script"
BTW the { and } in ${age} are not wrong but are not necessary.
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