How do I get the full path to a Perl script that is executing?

Question

I have Perl script and need to determine the full path and filename of the script during execution. I discovered that depending on how you call the script $0 va

Answer 1

The problem with __FILE__ is that it will print the core module ".pm" path not necessarily the ".cgi" or ".pl" script path that is running. I guess it depends on what your goal is.

It seems to me that Cwd just needs to be updated for mod_perl. Here is my suggestion:

my $path;

use File::Basename;
my $file = basename($ENV{SCRIPT_NAME});

if (exists $ENV{MOD_PERL} && ($ENV{MOD_PERL_API_VERSION} < 2)) {
  if ($^O =~/Win/) {
    $path = `echo %cd%`;
    chop $path;
    $path =~ s!\\!/!g;
    $path .= $ENV{SCRIPT_NAME};
  }
  else {
    $path = `pwd`;
    $path .= "/$file";
  }
  # add support for other operating systems
}
else {
  require Cwd;
  $path = Cwd::getcwd()."/$file";
}
print $path;

Please add any suggestions.