In this post i am going to explain various ways to arithmetic calculation in linux. Their are three commands to do arithmetic calculation. They are
1.bc,
2.let and
3.expr.
bc:
To subtract two number
#echo 6000-5816 | bc
To add two numbers
#echo 6000+5000 | bc
Using bc command we can add two variables
#c=15 ; d=25 ; echo $c+$d | bc
Command to multiply two numbers
#echo 5*5 | bc
Command to divide two numbers
#echo 5/5 | bc
Command to modulo
#echo 48%5 | bc
let:
let command to add two numbers
#let a=5+6 ; echo $a
let command to subtract two numbers
#let a=36-6 ; echo $a
let command to multiply two numbers
#let a=5*6 ; echo $a
let command to divide two numbers
#let a=36/6 ; echo $a
expr :
Note:Use man expr for more details
To add and display the result
#expr 5 + 6
To delete and display the result
#expr 5 – 3
To Divide and display the result
#expr 25 / 5
To do modulo
#expr 25 % 3
