更新时间:2023-11-03 23:17:28
是的,你可以使用的 bash中内置的算术展开 $(())
做一些简单的数学
Yes, you can use bash's built-in Arithmetic Expansion $(( ))
to do some simple maths
$ echo "$((5 * 5))"
25
检查Shell在Bash参考手册运算部分运营商的完整列表。
Check the Shell Arithmetic section in the Bash Reference Manual for a complete list of operators.
有关完整起见,其他指出的那样,如果你需要任意precision, BC
或 DC
效果会更好。
For sake of completeness, as other pointed out, if you need arbitrary precision, bc
or dc
would be better.