Sponsored Content
Top Forums Shell Programming and Scripting Arithmetic calculation in variable Post 302789501 by Kevin Tivoli on Wednesday 3rd of April 2013 07:04:00 PM
Old 04-03-2013
Arithmetic calculation in variable

Hi,

I am trying to do an addition to a value stored in a variable...
Code:
var1=`grep -n "match" sample.txt|cut -d : -f1`

var2=`echo $var1|cut -d " " -f1` (Here i want add +1 to the output value)

Last edited by Franklin52; 04-04-2013 at 03:18 AM.. Reason: Please use code tags for data and code samples
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

arithmetic problem

i am used to making scripts for hp-ux. but lately i tried to make some for solaris. the problem is that when i tried to execute it it gave me an error the "let: not found". why is that? how can i perform an arithmetic function in the solaris shell script? thanks :) (2 Replies)
Discussion started by: inquirer
2 Replies

2. Shell Programming and Scripting

arithmetic in tcsh

Yes I know tcsh sucks for scripting and arithmetic but I have to write a script for multiple users and they all use tcsh. I have this variable that I 'set' with but pulling numbers off of stings with set STUFF = `grep string file | awk command` Now I would like to add up the numbers that... (4 Replies)
Discussion started by: gobi
4 Replies

3. UNIX for Dummies Questions & Answers

Arithmetic: how to??

Hello all, I'd like to know how to perform arithmetic on multiple files. I have got many tab-delimited files. Each file contains about 2000 rows and 2000 columns. What I want to do is to to sum the values in each row & column in every file. The following explains what I want to do; ... (9 Replies)
Discussion started by: Muhammad Rahiz
9 Replies

4. 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

5. Shell Programming and Scripting

Arithmetic operation between columns using loop variable

Hi I have a file with 3 columns. say, infile: 1 50 68 34 3 23 23 4 56 ------- ------- I want to generate n files from this file using a loop so that 1st column in output file is (column1 of infile/(2*n+2.561)) I am doing like this: for ((i=1; i<=3; i++)) do a=`echo... (3 Replies)
Discussion started by: Surabhi_so_mh
3 Replies

6. Shell Programming and Scripting

arithmetic from csh variable passed to awk

I have the following code in a csh script I want to pass the value of the variable sigmasq to the awk script so that I can divide $0 by the value of sigmasq grep "Rms Value" $f.log \ | awk '{ sub(/*:*\.*/,x); \ print... (2 Replies)
Discussion started by: kristinu
2 Replies

7. Shell Programming and Scripting

echo multiple variable with calculation

$total=500 echo "scale=2; $val1*100/$total" | bc echo "scale=2; $val2*100*100/$total" | bc echo "scale=2; $val3*100/$total" | bc I want to make the above code to be accomplish in a single echo line. For instance output:21.3, 44.2, 51.6 How to achieve that, some one please help, i just... (5 Replies)
Discussion started by: alvin0618
5 Replies

8. Programming

arithmetic calculation using awk

hi there again, i need to do a simple division with my data with a number of rows. i think i wanted to have a simple output like this one: col1 col2 col3 val1 val2 val1/val2 valn valm valn/valm any suggestion is very much appreciated. thanks much. (2 Replies)
Discussion started by: ida1215
2 Replies

9. Shell Programming and Scripting

BC calculation for floating (invalid arithmetic operator )

Hi, I wish to compare the CPU LOAD 1 min with 5mins and 15mins. If 1 min's CPU LOAd spike 3% compare to 5 mins or 15 mins CPU Load, it is warning. If 1 min's CPU LOAd spike 5% compare to 5 mins or 15 mins CPU Load, it is critical. However I received following code error, I google it and... (10 Replies)
Discussion started by: alvintiow
10 Replies

10. Shell Programming and Scripting

Arithmetic operation in variable

Hi, Here is the script i try to perform arithmetic operation in two variables . git branch -r | while read brname ; do REV_COMMITS=`git rev-list --count $brname` echo "$brname has $REV_COMMITS" (( TOTAL = TOTAL + REV_COMMITS )) echo "in loop" $TOTAL done echo "total is " $TOTAL ... (3 Replies)
Discussion started by: greet_sed
3 Replies
ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
All times are GMT -4. The time now is 03:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy