parses ip address from ipconfig and generates url to update google hosted dynamic dns

dns.clj

(require '[clojure.java.shell :refer [sh]]                                                                                                                                                                         
         '[clojure.string :as string])                                                                                                                                                                             
                                                                                                                                                                                                                   
(let [out (:out (sh "ifconfig"))                                                                                                                                                                                   
      wifi-device "wlp0s20f3"                                                                                                                                                                                      
      i (string/index-of out wifi-device)                                                                                                                                                                          
      i (string/index-of out "inet" i)                                                                                                                                                                             
      j (string/index-of out "netmask" i)                                                                                                                                                                          
      inet (subs out i j)                                                                                                                                                                                          
      [_ ip] (string/split inet #" ")                                                                                                                                                                              
      username "foo"                                                                                                                                                                                               
      password "bar"                                                                                                                                                                                               
      hostname "myhost"                                                                                                                                                                                            
      url (format "https://%s:%s@domains.google.com/nic/update?hostname=%s&myip=%s" username password hostname ip)]                                                                                                
   (println url)
   (println "sudo systemd-resolve --flush-caches")                                                                                                                                                                         
 )                                                                                                                                                                                                       
                                                                                                                                                                                                                   
(System/exit 0)