《Linux Shell腳本攻略》 筆記 第七章：網絡操作

第七章：網絡操作

1、列印網絡接口清單

[root@localhost touch_more]# ifconfig | cut -c-10 | tr -d ' ' | tr -s '\n'
eth0
lo
//cut -c-10 ;  輸出前10個字元;
//tr -d ' ' ;      删除所有空格;
//tr -s '\n';     壓縮重複的換行符           

2、檢視名字伺服器

[root@localhost touch_more]# cat /etc/resolv.conf 
# Generated by NetworkManager
domain localdomain
search localdomain
nameserver 192.168.119.2           

3、DNS查找

[root@localhost touch_more]# nslookup www.csdn.net
Server:         192.168.119.2
Address:        192.168.119.2#53

Non-authoritative answer:
www.csdn.net    canonical name = www.csdn.net.aqb.so.
Name:   www.csdn.net.aqb.so
Address: 14.17.69.22           

4、列舉出區域網路中同一網段的所有的活動主機

[root@localhost program_test]# cat list_active_hosts.sh 
#!/bin/bash

for ip in 192.168.119.{1..255} ;
do
        ping $ip -c 2 &> /dev/null;

        if [ $? -eq 0 ];
        then
                echo $ip is active!
        fi
done
[root@localhost program_test]# ./list_active_hosts.sh 
192.168.119.1 is active!
192.168.119.2 is active!           

5、系統運作時間監視

<pre name="code" class="plain" style="font-size: 14px;">[root@localhost program_test]# cat ssh_test.sh
#!/bin/bash

IP_LIST="192.168.119.1 192.168.119.2 192.168.119.128"
USER="yxy"

for ip in $IP_LIST;
do
        utime=$(ssh $USER@$ip uptime | awk '{ print $3 }' )
        echo $ip uptime: $utime
done           

作者：銘毅天下

轉載請标明出處，原文位址：

http://blog.csdn.net/laoyang360/article/details/42364877