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document updated a month ago, on Apr 24, 2025

FindBin breaks in some cases:

symlinks?
another problem
more

Alternative modules that don't have these problems:

lib::abs
Find::Lib
FindBin::libs
Dir::Self

Alternatives, that only use core modules:

use Cwd 'abs_path';
use File::Basename;
use lib dirname( abs_path $0 );


    # Alternately, with the libraries given explicitely
    use Cwd;
    use File::Basename;
    use lib File::Basename::dirname( Cwd::abs_path( $0 ) );

use File::Basename;
use File::Spec::Functions 'rel2abs';
use lib dirname(rel2abs($0));