How do I add and subtract using bash shell script.
-
Adding.
let sum="10 + 1" echo "10 + 1, That's legs $sum."
Running this script gives:
$ ./addsub.sh 10 + 1, That's legs 11.
In the
let
statement change + for a minus.Subtract.
let sum="10 - 1" echo "10 - 1, That's $sum, Doctor's Orders."
Running this script gives:
$ ./addsub.sh 10 - 1, That's 9, Doctor's Orders.
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