1. Fedora

Hey, I just wanted to know how one can write simple arithmetic like addition, subtraction, multiplication and division in shell-script. (14 Replies)

2. Shell Programming and Scripting

I am begining to learn bourne shell and as a practice I have written a script which when given the purchase price and percentage of discount calculates the savings. I somehow cannot figure out why my script fails to do arthimatic calculation on real numbers. Could anyone look at the script... (5 Replies)

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page unix com/answers-frequently-asked-questions/13785-yesterdays-date-date-arithmetic.html Date Arithmetic with the Shell has link of www samag com/documents/s=8284/sam0307b/0307b.htm which is no longer. Is this the correct place to post this?:confused: and I got message... (1 Reply)

4. Shell Programming and Scripting

Hello everybody, I decided to take a Unix Introduction class and have never had experience with programming. Everything was fine until recently when the Prof. started shell scripting and he wants us to make a small script to add unlimited numbers from arguments and from standard input. I... (1 Reply)

5. Homework & Coursework Questions

Hello everybody, I decided to take a Unix Introduction class and have never had experience with programming. Everything was fine until recently when the Prof. started shell scripting and he wants us to make a small script to add unlimited numbers from arguments and from standard input. I... (8 Replies)

6. Shell Programming and Scripting

I need help on arithmetic root@server # hour=`date | awk {'print $4'} | cut -d: -f 1`; echo $hour 04 Now I subtract this result by 1 or 01 I get "3" as the answer. I need "03" as the answer, ie last two significant numbers should be there. root@server # hour=`date | awk {'print $4'} | cut... (3 Replies)

7. Shell Programming and Scripting

Hi, I need a help with arithmetic calculations in my script. I have two variables: a=17; b=1712 I want to perform ($a/$b)*100 with two decimals in the result. I tried with following: res=$((100*a/b)) res=`echo "scale=2; $a / $b" | bc` But I am not getting the decimal values.... (4 Replies)

8. Shell Programming and Scripting

I am trying to perform arithmetric, for example, to increment the value of variable $a (say 3) by 0.05 but when I tried the following expression let a=a+0.05 or a=$((a+0.05)) both returned 3.0499999999999998 I want to keep 2 decimal places so it returns 3.05 instead. (6 Replies)

9. Shell Programming and Scripting

i am having a varialbe a , which is input to my file i want to multiply this input with value .43, and assign it to variable b. i tried it as below: #!/bin/sh a=$1 b=`expr $1\*0.43` echo b=$b error : expr: non-integer argument Please tell me , how to do this. Thanks (10 Replies)

10. Shell Programming and Scripting

Hello, I am having a problem when i execute following script on RHEL 6.4. Same script works fine on another machine where I have same version of RHEL and KSH. Below is the rpm and RHEL version. ossvm12(0)> rpm -qa | grep ksh ksh-20100621-19.el6.x86_64 ossvm12(0)> cat... (7 Replies)