Multiply two variables in t shell

Tags

beginners

Top Forums UNIX for Dummies Questions & Answers Multiply two variables in t shell

01-18-2012

Registered User

78, 0

Join Date: Jan 2009

Last Activity: 24 May 2019, 2:21 PM EDT

Location: Cambridge, MA

Posts: 78

Thanks Given: 18

Thanked 0 Times in 0 Posts

Multiply two variables in t shell

Hello,

How can I multiply two variables that contain floating point numbers.

For example, how can I get the value for c

a=2.165
b=3.234
c=a+3*b

Thanks,
Guss

Gussifinknottle

View Public Profile for Gussifinknottle

Find all posts by Gussifinknottle

01-18-2012

Registered User

2,202, 340

Join Date: Apr 2007

Last Activity: 10 May 2020, 8:59 AM EDT

Location: 44.21.48N 80.50.15W

Posts: 2,202

Thanks Given: 3

Thanked 340 Times in 306 Posts

Code:

a=2.165
b=3.234
c=`echo $a \* $b|bc`

Read more about bc if you want greater precision in the product

This User Gave Thanks to jgt For This Post:

jgt

View Public Profile for jgt

Visit jgt's homepage!

Find all posts by jgt

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Multiply values from a file

Hi All, I extracted a file using an awk command like this awk '{print substr($0,78,5)"," substr($0,59,6) "," substr($0,81,3) "," substr($0,11,7)}' file1 >> OUTPUT cat OUTPUT 00001,100000,005,0000080 00001,100000,008,0000220 00001,100000,001,0001000 00010,100000,001,0000400 I want...

2. UNIX for Dummies Questions & Answers

Multiply value by row

Hi I would like to know how can I multiply the value of column three to columns 4-end of file example of input file: rs1000012 AK8 2 0.05 0.05 1 0 0 rs10000154 PAQR3 0.01 2 1 2 2 1 Desired output file: rs1000012 AK8 ...

3. Shell Programming and Scripting

Multiply a row of numbers

the following is used to add numbers: echo 7 47 47 44 4 3 3 3 3 3 | awk '{ for(i=1; i<=NF;i++) j+=$i; print j; j=0 }' how do i multiply OR subtract a row of numbers using the above tactic?

4. Shell Programming and Scripting

multiply with awk

HI help i have cc 9+37.50 328611.50 688498.25 42.38 cc 66+62.50 328636.50 688498.42 42.58 i want to make o/p cc 9+3750 328611.50 688498.25 42.38 cc 66+6250 328636.50 688498.42 42.58 plz help

5. UNIX for Dummies Questions & Answers

Finding multiply directories

I have multiply directories scattered throughout my system that end in 2011. Example: one_2011 two_2011 three_2011 etc.... I'm trying to find all of these directories but coming up short. I tried find / -type d -name *2011 > example Any suggestions? I already searched in the...

6. Shell Programming and Scripting

Multiply numbers from different files

Hi All, I have tried few things with this but it did not help much. I have some 200,000 files in a directory. There are two sets of files. 1. Files with extension .dat with file names like these (1.dat, 2.dat, 5.dat, 8.dat....200000.dat) 2. Another set of files with .txt extension and...

7. Shell Programming and Scripting

Multiply whole column with a value

Hi, I need to multiply 3rd column (comma seperated) of entire file by a value say 2.2. Suppose the file is: C,Gas $ YTD(TRI),15512.36,01/01/2010 New file should be (3rd column value multiplied by 2.2): C,Gas $ YTD(TRI),34127.192,01/01/2010

8. Shell Programming and Scripting

All I want to do is Multiply...

All I want to do is find 5!. read num num={1..5} while do f= done echo f Error Msg. line 5: ${1..5} bad substitution line 6: integer expression expected Line 5 is the num=... Line 6 is the "while" statement I am new at this, and I am really, really trying. Please...

9. Shell Programming and Scripting

Multiply variables

I have no idea about programming, just know some simple html :confused:and I need to get to somebody that can help me with creating the application (?) that will multiply 2 varibales and given price (height x lenght) x $$$. PLEASE HELP!:confused: edit by bakunin: Anita, as much as we...

10. Shell Programming and Scripting

multiply variable

I need to multiply the value of a variable and then store it in another variable. I have EXPHOURINSEC=$(($EXPDATEHOUR * 3600)) but i get an error saying the * is unexpected. Im using ksh

UNIX for Dummies Questions & Answers