if嵌套语句 shell脚本实例 测试是否闰年
#!/bin/bash # This script will test if we're in a leap year or not.year=`date +%Y`
if [ $[$year % 400] -eq "0" ]; then
echo "This is a leap year.February has 29 days."
elif [ $[$year % 4] -eq 0 ]; then
if [ $[$year % 100] -ne 0 ]; then
echo "This is a leap year, February has 29 days."
else
echo "This is not a leap year.February has 28 days."
fi
else
echo "This is not a leap year.February has 28 days."
fi
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