如何获得正在执行的 Perl 脚本的完整路径？

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 varies and sometimes contains the fullpath+filename and sometimes just filename. Because the working directory can vary as well I can't think of a way to reliably get the fullpath+filename of the script.

Anyone got a solution?

转载于:https://stackoverflow.com/questions/84932/how-do-i-get-the-full-path-to-a-perl-script-that-is-executing

Answer 1

$0 is typically the name of your program, so how about this?

use Cwd 'abs_path';
print abs_path($0);

Seems to me that this should work as abs_path knows if you are using a relative or absolute path.

Update For anyone reading this years later, you should read Drew's answer below. It's much better than mine.