multiply variable

fwabbly · #1 (**permalink**) 07-27-2007

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

lorcan · #2 (**permalink**) 07-27-2007

It should be

Code:

EXPHOURINSEC=$((EXPDATEHOUR * 3600))

fwabbly · #3 (**permalink**) 07-27-2007

thanks. its always the little things!

cfajohnson · #4 (**permalink**) 07-28-2007

Quote:

Originally Posted by fwabbly

thanks. its always the little things!

What little thing solved it for you? Your original line and all of the alternatives posted should work in ksh.

You would not have got the error message you gave with the line you posted if it was run in a POSIX shell (ksh, bash, etc.)

One alternative posted, EXPHOURINSEC=$((EXPDATEHOUR * 3600)), while a valid POSIX command, would not have worked in /bin/sh on a *BSD system.

madmat · #5 (**permalink**) 07-27-2007

Try :
EXPHOURINSEC=$((${EXPDATEHOUR}*3600))
without blanks

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Multiply variables	Anita Flejter	Shell Programming and Scripting	2	05-06-2008 08:03 PM
gawk multiply one field	pau	Shell Programming and Scripting	2	05-28-2006 02:01 PM
How to add/multiply numbers with scientific notation (2.343e-5)	chugger06	UNIX for Dummies Questions & Answers	1	01-26-2006 10:03 PM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by