Shell practice: ping the DNS for batch resolution of domain names

Shell practice: ping the DNS01 for batch resolution of domain names and ping the DNS02 requirement for batch resolution of domain names: Read the domain name list from a file: 031 read the domain name list file. 04 the format of the list file is 051cn062cn072. the resolved ip address is output to a file. 08 output file shell practice: ping the DNS for batch resolution of domain names
01 requirement for batch domain name resolution by ping DNS02: Read the domain name list from a file: 031. Read the domain name list file. 04 the format of the list file is 051. cn062.cn072. output the resolved ip address to a file. 08. the output file format is 09DNS: 1.cn 1.1.1.110DNS: 2.cn 2.2.2.211 #! /Bin/sh12 # code by scpman13 # write 2013-08-2214 # ping test15echo> pingok.txt 16 echo> pingfaild.txt 17 # read ip list18for ip in 'cat ip.txt '19do20 # ping one21res = 'ping-c 1 $ ip | egrep "\(. * \) "| sed-e" s/PING/DNS:/g; s/(// g; s /): 56 data bytes // g "'22if ['echo" $ res "| grep-c 'dn''-gt 0] 23then24 echo $ res25 echo $ res> pingok.txt 26else27 echo ping $ ip fail28 echo $ ip> pingfaild.txt 29fi 30done31 save Row: 32 # sh. sh33DNS: www.expo-china.com 222.73.238.5134DNS: page.china.alibaba.com 110.75.195.1035DNS: g0183.61.117.10336ping: cannot resolve www. d1net. comexpo: Unknown host37ping www. d1net. comexpo fail38DNS: www.youxiuhui.com 219.234.4.9039 final result: 40 successful 41 # cat pingok.txt 42DNS: www.expo-china.com success: page.china.alibaba.com 110.75.195.1044DNS: expo. asi Apump.cn 222.73.57.5245... 46 # cat pingfaild.txt 47www. d1net. comexpo48www. cecsz. net1