Re: expr say "non integer argument"

[Chris F.A. Johnson]

On Thu, 18 Feb 2010, address@hidden wrote:

> $ expr 3.1 + 3
> expr: non-numeric argument <---say "non integer argument"
> $ expr 3.1 + 3b
> expr: non-numeric argument

   The expr command's arithmetic only works with integers.

   3.1 is not an integer, nor is 3b.

   To do calculations with decimal fractions, I recommend awk.

-- 
   Chris F.A. Johnson                          <http://cfajohnson.com>
   ===================================================================
   Author:
   Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
   Pro Bash Programming: Scripting the GNU/Linux Shell (2009, Apress)