Re: How can I check if a file exists in gawk?

On Mar 27, 4:36 pm, Ed Morton <mor...@[EMAIL PROTECTED]
> wrote:
> On 3/27/2008 11:27 AM, Boltar wrote:
>
> > Hi
>
> > I'm writing an awk script that takes a path as a variable using -v. In
> > the BEGIN section I need to parse
> > this file using:
>
> > while(getline < path)
> > {
> > :
> > :
> > }
>
> Why? There may be a better approach that doesn't involve getline.

Why? Err , because I have to read in the file line by line to extract
the fields to set up some mappings before I start processing the main
file in the { } section.

Anyway , turns out if I do

while((getline < path) > 0)

then it doesn't hang if the path is invalid. No idea why since the
while() should exit on a zero value anyway without the comparison
check but I guess that just another one of awks irritating little
quirks.

B2003