What is the use `-d` in Perl? -

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• using -d test operator in perl 3 answers

what -d in following piece of code:

foreach $filename (@files) {         $filepath = $dir.$filename;         next if -d $filepath;         function1(); } 

this short form for

if (-d $filepath) {     next; } 

where -d $filepath test if $filepath directory.

see http://perldoc.perl.org/functions/-x.html full list of file tests.