1.3 : Basic Bash scripting - ping sweeper (Part IV)

1. Basic ping scanning for port 10.0.0.0/24

   #!/bin/bashA
   scan()
   {
       output=$(nmap $1)
       if echo $output | grep -q "Host is up"; then
           echo $1 >> ping-sweep.txt
       fi
   }
   
   for ID in `seq 1 10`
   do
       scan 10.0.0.$ID &
   done
   

2. In python

   # import os
   import subprocess
   
   def scan(ip):
       # res = os.system('ping -c 1 %s' % ip)
       # print(res)
       proc = subprocess.Popen("ping -W 500 -c 1 %s" % ip, shell=True, stdout=subprocess.PIPE)
       (out, err) = proc.communicate()
       # print(out.decode())
       if " 0.0% packet loss" in out.decode() :
           print(ip)
   
   def main():
       # scan("10.0.0.1")
       for ip in range(1,10):
           scan ("10.0.0.%s" %ip)
   
   if __name__ == "__main__":
       main()
   

> : redirect output to file
| : pass to next command as input arguments