具体 Linux Shell 编程中的运算示例如下所示:
[root@host ~]# cat test.sh #!/bin/bash num1=10 num2=2 # 两个数相加 add=$[$num1+$num2] echo $num1 + $num2 '=' $add # 两个数相减 sub=$[$num1-$num2] echo $num1 - $num2 '=' $sub # 两个数相乘 mut=$[$num1*$num2] echo $num1 '*' $num2 '=' $mut # 两个数相除 div=$[$num1/$num2] echo $num1 / $num2 '=' $div # 固定值 temp=$[$num1*10] echo $num1 '*' 10 '=' $temp [root@host ~]#
执行结果如下所示:
[root@host ~]# sh test.sh 10 + 2 = 12 10 - 2 = 8 10 * 2 = 20 10 / 2 = 5 10 * 10 = 100 [root@host ~]#
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