Re: Dumb path question

On 10.03.2009, at 21:25, John Delacour wrote:

> At 21:10 -0600 9/3/09, Doug McNutt wrote:
>
>> At 22:24 -0400 3/9/09, Chris Devers wrote:
>>> How can a Perl script reliably, portably resolve the path inside  
>>> which
>>> it is running?...
>>
>> $0  That's a zero.  Has always worked for me to produce a full  
>> path to a running perl script.
>>
>> ...There is a module "cwd"...
>
> or rather Cwd.  $0 will give the name but not the full path, so I'd  
> suggest
> the following:
>
> #usr/bin/perl
> use Cwd;
> my $currentdir = cwd();
> print "$currentdir/$0\n";

That's for a relative path.  It would fail if $0 is an absolute path  
to begin with, the cases would have to be distinguished.  To be truly  
portable, it should also make no assumptions about the directory  
separator.  That's what Dir::Self (available on
CPAN) does.

Anno