I'm trying to move a file but I want to ensure that it exists before I do so. What's the simplest way to do this in Perl?

My code is like this. I looked up the open command, but I am not sure it is the simplest way or not.

if  #Parser.exe exist in directory of Debug
{
    move ("bin/Debug/Parser.exe","Parser.exe");
}
elsif  #Parser.exe exist in directory of Release
{
    move ("bin/Release/Parser.exe","Parser.exe");
}
else
{
    die "Can't find the Parser.exe.";
}

Thank you.