La commande bc lance un calculateur basique.
(output de la commande tldr bc)
Wiki étudiants INGI
bc -l : Run calculator in interactive mode using the standard math library.
bc <<< "(1 + 2) * 2 ^ 2" : Calculate the result of an expression.
bc <<< "scale=10; 5 / 3" : Calculate expression and force number of decimal places to 10.
bc -l <<< "s(1) + c(1)" : Calculate expression with sine and cosine using mathlib.
man bc