Shell uses BC for Floating Point Calculation

 

Bash cannot handle floating-point operations and lacks specific operations. These operations are important computing functions. Fortunately,BCThis problem can be solved.BCNot only is it a flexible and precise tool with multiple functions, but it also provides some convenient functions that many programming languages have. because it is a complete UNIX tool, it can be used in pipelines,BCIt is also very common in scripts.

BC uses scale to solve decimal points.

The following is an example.

[Root @ lancy bin] # echo "scale = 2; 5/3" | BC
1.66

Scale is the number of digits that retain decimal places.