redirecting standard i/o from an exec'ed programme

[George Bogatko]

In article <3939 at auspex.auspex.com>, guy at auspex.auspex.com (Guy Harris) writes:
> >Popen is expensive.  It requires a shell for 'system' and then
> >another shell to run your request in.
> 
> It doesn't use "system()" on any UNIX implementation I've used (V7, BSD,
> S3, S5, etc.).  It just runs *one* shell, which runs your command. 

Absolutly right.  I goofed.  What we saw was an explosion of 
fork/exec combinations when the application made heavy use of 'popen'
instead of directly using fork/exec.

I should have said:

	"Popen is expensive.  It requires a fork/exec to invoke the
	shell and then another fork/exec to run your request."

Crow is not digestable, by the way.

GB.