Shell Numeric operations

Shell arithmetic operation addition Note! ' 4 ' + ' 5 ' between these three should have blank r= ' expr 4 + 5 ' echo $rr =$[4 + 5]echo $rr =$ ((4 + 5)) echo $r multiplication r= ' expr 4 \* 5 ' r=$ ((4 * 5)) r=$[4 * 5]echo $r Division r= ' Expr 40/5 ' r=$ ((40/5)) r=$[40/5]echo $r subtraction r= ' expr 40-5 ' r=$ ((40-5)) r=$[40-5]echo $r seeking remainder R =$[]echo $r (e.g. 2 of 3 Parties) r=$ ((2 * 3)) r=$[2 * 3]echo $r Note: Expr does not have the same weight 4: Add with let command: N=10let n=n+1echo $n #n =1 1 multiplication: Let M=n*10echo $m Division: let R=m/10echo $r seeking remainder: Let R=m%7echo $r multiply emerges: let R=2**2echo $r

Shell Numeric operations