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    get_config(split(/$s/), $_);
get_config(split(/$s/, $_));
  2. or download this
      DB<101> unless defined($a) { print "OK" }
syntax error at (eval 7)[/usr/share/perl5/5.26/perl5db.pl:738] line 2,
+ near "unless defined"
...
OK
  DB<103> print 'OK' unless defined($a);
OK