On Tue, 8 May 2012, Gerry wrote: > I'd get rid of the epensive bash call. :-) > > #! /usr/bin/awk -f > BEGIN {printf("%.1f kg/m²\n", 703.06958*ARGV[2]/ARGV[1]^2)} Thanks. That will be much faster and easier on the system. ;-) Thanks also to you and Jason for pointing out that I forgot the newline. I always do that, but usually I catch it because I get some horrible-looking output. I have a newline built into my prompt and I didn't notice that I was missing my empty line. I didn't know I could write an awk script that way (awk shebang). That's good to know. Mike