$ bc -sįor more information, view the bc man page. To process exactly the POSIX bc language, use the -s flag and to enable warnings for extensions to POSIX bc, use the -w option as shown.
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Let’s look at how to use bc non-interactively, this is also useful for shell scripting purposes. You can also use the following command for common shells for instance in bash, ksh, csh, to pass arguments to bc as shown. $ bc -lĪlternatively, you can specify the scale after opening bc as shown. Now run the previous expression once more.
You can use the -l flag to sets the default scale (digits after the decimal point) to 20 and defines the standard math library as well.
You should note that while bc can work with arbitrary precision, it actually defaults to zero digits after the decimal point, for example the expression 3/5 results to 0 as shown in the following output. This is free software with ABSOLUTELY NO WARRANTY. To open bc in interactive mode, type the command bc on command prompt and simply start calculating your expressions. If you don’t have bc on your system, you can install it using the package manager for your distribution as shown: $ sudo apt install bc #Debian/Ubuntu It can be used typically as either a mathematical scripting language or as an interactive mathematical shell as explained in this article. It is a language that supports arbitrary precision numbers with interactive execution of statements and it has syntax similar to that of C programming language. Bc ( Basic Calculator) is a command line utility that offers everything you expect from a simple scientific or financial calculator.