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  1. or download this
    # in code.pl, for example
if ( /test1/ ) { print; }
my $re = qr/test2/;
my @array = split( /test3/, $ARGV[0] );
  2. or download this
    perl -MO=Concise,-exec code.pl | grep "</>"
  3. or download this
    code.pl syntax OK
3  </> match(/"test1"/) s/RTIME
9  </> qr(/"test2"/) s/64
e  </> pushre(/"test3"/) s/64