From: nobody@nowhere.com   
      
   Have web site utilizing windows shell scripts as a CGI. Need to implement   
   recaptcha2 into my form   
   page. Googling long time for examples how to recaptcha working in background   
   and find this bash   
   implementation https://github.com/m41k/recaptcha-google-cgishell   
   blob/master/formk.sh but do not   
   understood string manipulations in the lines beginning with ACTIN, RECAPTCHA,   
   RESP and CHECK.   
      
   Could someone who understand bash scripting help me, please?   
      
   L.   
      
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