Shell Programming and Scripting

34 /50 * 100 equals to 68%

$ x=$(( 100 * 34 / 50 ))
$ echo $x
68

bkpreport.sh[380]: test: Specify a parameter with this command.
bkpreport.sh[384]: test: Specify a parameter with this command.
68

$ x=`expr 100 \* 34 / 50`
$ echo $x
68

$ let x="100 * 34 / 50"
$ echo $x
68

$ cat temp.sh
x=$(( 100 * 34 / 50 ))
echo $x

x=`expr 100 \* 34 / 50`
echo $x

let x="100 * 34 / 50"
echo $x

$ ./temp.sh
68
68
68