查询ip归属地的shell脚本

#!/bin/bash
#Purpose: 查找ip地址所在地
ipp (){
exec < $1
while read a
do
sring=`curl -s "http://ip138.com/ips138.asp?ip=${a}&action=2"| iconv -f gb2312 -t utf-8|grep '' | awk -F '[<> ]+' '{print substr($7 
,7)}'` 
echo $a $sring 
done 
} 
case $1 in 
-f) 
shift 
ipp $1 
;; 
-i) 
shift 
sring=`curl -s "http://ip138.com/ips138.asp?ip=${1}&action=2"| iconv -f gb2312 -t utf-8 |grep '' | awk -F '[<> ]+' '{print substr($7,7)}'` 
echo $1 $sring 
;; 
*) 
echo "[Help] 
$0 need -f or -i 
-f ------- argument is a file 
-i ------- argument is a IP 
[For example]: 
$0 -f filename 
$0 -i ipadress 
" 
;; 
esac