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my @array4=system'curl','-G','-x','127.0.0.1:8080','http:/ +/www.google.com' or die "system 'curl' failed: $?";
my @array4=system'curl','-G','-o',"result.txt",'-x','127.0.0.1:8080',' +http:/ +/www.google.com' or die "system 'curl' failed: $?";