How to get decimal value from division in fish shell

Question

math 5/2 returns 2.

I want 2.5 - how to get decimal values?

Answer 1

You can "force" mathreturn the default values ​​- use the parameter -lfor bc:

$ math 5/2
2

$ function bc
      command bc -l $argv
  end

$ math 5/2
2.50000000000000000000

Answer 2

Add this to one of the config.fish files

set -x BC_ENV_ARGS ~/.bc.cfg

Then create a .bc.cfg file to tell a lot of decimal places to display

echo "scale = 5" >> .bc.cfg

This will:

math 5/2

2,50000

Answer 3

you need to force floating point division instead of integer division

math 5/2.0