I don't run Win myself, so I can't test this, but perhaps something like: 
sub isExe {
  my $exe = shift;
  my @paths = split /;/, $ENV{PATH};
  foreach my $path (@paths) {
    return 1 if -x $path/$exe;
  }
  return 0;
}

[download]
Call it like: 
if (isExe("tail.exe")) {
  print "tail.exe is in my PATH.\n"
}

[download]

In reply to Re: Verifiying an external program exists by Paladin
in thread Verifiying an external program exists by ibanix

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