Relative speed of Bourne vs. C Shells - C Shell is faster.

[Jerry Peek]

[...getting onto a tangent...]

In article <84 at tekcrl.UUCP> toddb at tekcrl.UUCP (Todd Brunhoff) writes:
> 
> I consider that a rather silly comparison since neither shell was designed
> for numeric processing.  You wouldn't use Fortran or C for evaluating
> predicates like you would find in Prolog, etc, etc.  A better solution for
> your "application" (which uses about .8u and 1.2s) would be
> 
> #!/bin/sh
> awk '
> BEGIN {
> 	x = 1;
> 	while (x < 100)
> 		if (x++ > 10)
> 			print "Hi!" x
> 	exit
> }'

Though this wasn't the point Todd was trying to make, it's a good place to
use the magic-number business to feed the script *directly* to awk, and never
start a shell *at all*.  The following setup shaves the script above
(about 0.4u and 0.4s) down to 0.3u and 0.2s:

	#! /bin/awk -f
	BEGIN {
		x = 1;
		while (x < 100)
			if (x++ > 10)
				print "Hi!" x
		exit
	}


--Jerry Peek, UNIX Training Instructor, Tektronix, Inc.
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