将文本追加到shell脚本的输出

Question

我想挖掘大量的IP，并在一行中写出命令的put (以paloalto firewall命令的格式)，但我的脚本给出的响应如下

servername.
ip-netmask 10.224.161.242

我的需求是：set address <servername> ip-netmask <ip>

#!/bin/bash

filename='ip_in.txt' # name of file with IPs to handle
nameserver='10.225.9.18' # nameserver to query

for ip in `cat $filename`
do

dig @$nameserver -x $ip +short
echo "ip-netmask $ip"

done

我该如何实现这一点？

Answer 1

for ip in $(cat $filename)
do
  servername=$(dig $nameserver -x $ip +short | sed 's/\.$//')
  echo "set address $servername ip-netmask $ip"
done