WebIn ksh93, zsh and yash, but not in other shells, you get floating-point arithmetic if there's something in the expression to force floating-point, such as a floating-point constant. This feature is not present in the Bourne shell, ksh88, pdksh, bash, ash. echo "Blah: $ ( ($matches * 100.0 / $files))" WebSep 26, 2024 · A Simple Arithmetic Calculator using bc. By using some of GNU bc advanced features, you can prompt user for entries, create some infinite loops and use condtional statements. Below example is a simple calculator in bc to use in your bash shell using a floating-point precision of two decimal digits after the decimal point.
How to calculate values in a shell script? - Unix & Linux Stack …
WebJan 9, 2024 · Arithmetic in Linux Bash Shell 2. Using expr Command. The expr command evaluates expressions and prints the value of provided expression to standard output. We will look at different ways of using expr for doing simple math, making comparison, incrementing the value of a variable and finding the length of a string.. The following are … WebJul 8, 2015 · bash doesn't support floating point arithmetic. ksh and zsh do. POSIXLy, you could use either bc as Florian's answer suggests, or awk. For instance, $ awk 'BEGIN {print 2.5+3.7}' 6.2 Ubuntu also comes with Python and Perl which are more than capable of performing floating point calculations. free pink computer wallpaper
Division with Variables in a Linux Shell Baeldung on Linux
WebMar 4, 2024 · We can get the result as a floating-point number by using a special variable, scale, specific to the bc command. Its value is 0 by default. That is why we got no decimal points in the output of the command execution above. The scale determines the number of digits after the decimal point. WebJust run bc and enter some floating point calculation expression, such as “1.2+8.2”, bc will give the result. In a script, we certainly need a more automatic way. This is a piece of … WebJun 1, 2016 · The shell can handle some simple data conversion, so decimal expressions may work; but floating point values will not work. To do math in the shell, you can pipe … free pink floral background images