Re: Native file exist check

[Andrew J. Schorr]

On Fri, Jun 05, 2020 at 10:15:12AM -0500, Neil R. Ormos wrote:
> Peng Yu wrote:
> 
> > https://stackoverflow.com/questions/29284472/awk-check-file-exists
> >
> > The following solution is shown above. But getline could potentially
> > read too much (for example processing a binary file in which a line
> > can be very long). [...]
> 
> Consider whether setting RS to "." resolves the concern that getline might 
> read "too much".
> 
>   <https://www.gnu.org/software/gawk/manual/gawk.html#gawk-split-records>

Not really: setting RS to "." matches the period character only.
But yes, setting RS to a clever value is the key.