Use of uninitialized value $arg in stat at /user/s5e7420/local/lib/perl5/5.18.0/File/stat.pm line 206.
Use of uninitialized value $name in index at /user/s5e7420/local/lib/perl5/5.18.0/Symbol.pm line 118.
Use of uninitialized value $name in pattern match (m//) at /user/s5e7420/local/lib/perl5/5.18.0/Symbol.pm line 121.
Use of uninitialized value $name in hash element at /user/s5e7420/local/lib/perl5/5.18.0/Symbol.pm line 121.
Use of uninitialized value $name in concatenation (.) or string at /user/s5e7420/local/lib/perl5/5.18.0/Symbol.pm line 129.
Can't call method "mtime" on an undefined value at script.pl line 13.