On Thu, 18 Feb 2010, jida...@jidanni.org wrote: > >>>>> "CFAJ" == Chris F A Johnson <ch...@cfajohnson.com> writes: > CFAJ> On Thu, 18 Feb 2010, jida...@jidanni.org wrote: > > >> $ expr 3.1 + 3 > >> expr: non-numeric argument <---say "non integer argument" > >> $ expr 3.1 + 3b > >> expr: non-numeric argument > > CFAJ> The expr command's arithmetic only works with integers. > Yes > CFAJ> 3.1 is not an integer, nor is 3b. > Yes > CFAJ> To do calculations with decimal fractions, I recommend awk. > Yes. > 3,1 is numeric!
But it is NOT an integer, and expr only handles integers. -- 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)
