Perl5 リファレンス



       symlink OLDFILE,NEWFILE
               Creates a new filename symbolically linked to the
               old filename.  Returns `1' for success, `0'
               otherwise.  On systems that don't support symbolic
               links, produces a fatal error at run time.  To
               check for that, use eval:

                   $symlink_exists = eval { symlink("",""); 1 };


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