symlink
symlink - create a symbolic link to a file
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:
<![CDATA[
$symlink_exists = (eval 'symlink("","");', $@ eq '');
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