Sponsored Content
Top Forums Shell Programming and Scripting how to do decimal arithmetic in shell script Post 302686329 by benalt on Tuesday 14th of August 2012 10:24:40 AM
Old 08-14-2012
Assuming the list only contains numbers (not the '12K' currently there which you haven't said how to interpret) you could do it in ksh93 like this:
Code:
set $(<b22)
s=0
for i; do ((s += $i)); done
echo $s

 

10 More Discussions You Might Find Interesting

1. Fedora

Simple arithmetic in shell

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

2. Shell Programming and Scripting

Arithmetic calculation on real numbers in Bourne Shell Script

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)
Discussion started by: Tirmazi
5 Replies

3. Post Here to Contact Site Administrators and Moderators

Broken link FAQ date arithmetic with shell

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)
Discussion started by: dgerman
1 Replies

4. Shell Programming and Scripting

Arithmetic Problem with shell script programming.

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)
Discussion started by: Florinel76
1 Replies

5. Homework & Coursework Questions

Arithmetic Problem with shell script programming.

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)
Discussion started by: Florinel76
8 Replies

6. Shell Programming and Scripting

shell arithmetic least significant place

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)
Discussion started by: anilcliff
3 Replies

7. Shell Programming and Scripting

Help with Arithmetic calculations in Shell script

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)
Discussion started by: karumudi7
4 Replies

8. Shell Programming and Scripting

Arithmetic but keep 2 decimal places

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)
Discussion started by: piynik
6 Replies

9. Shell Programming and Scripting

Shell arithmetic : operations on decimal points

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)
Discussion started by: rishifrnds
10 Replies

10. Shell Programming and Scripting

ksh Arithmetic syntax error while comparing decimal numbers

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)
Discussion started by: Adithya Gokhale
7 Replies
script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.11 30 Jan 2004 script(1)
All times are GMT -4. The time now is 06:12 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy