How to define two variable x=20, y=5 and then to print division of x and y (i.e. x/y) bash script

I tried this but i am getting error:

ubuntu@ubuntu-VirtualBox:~/Documents$ x=20
ubuntu@ubuntu-VirtualBox:~/Documents$ y=5
ubuntu@ubuntu-VirtualBox:~/Documents$ expr x / y
expr: non-integer argument

1

1 Answer

You need to add $ in front of a variable name to refer to its contents.

pilot6@Pilot6:~$ x=20
pilot6@Pilot6:~$ y=5
pilot6@Pilot6:~$ expr $x / $y
4

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