Condition tests using the if/then construct may be nested. The net result is equivalent to using the && compound comparison operator.
a=3
if [ "$a" -gt 0 ]
then
if [ "$a" -lt 5 ]
then
echo "The value of \"a\" lies somewhere between 0 and 5."
fi
fi
# Same result as:
if [ "$a" -gt 0 ] && [ "$a" -lt 5 ]
then
echo "The value of \"a\" lies somewhere between 0 and 5."
fi |
Example 34-4 demonstrates a nested if/then condition test.
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