linux下监控网络流量的脚本

我看了下，linux下的/proc/net/dev记录了每块网卡发送和接受的包和字节数。因此萌生想法，写了一个。运行效果：

[root@74-82-173-217 ~]# ./net.sh 
Current Ip: inet addr:74.82.173.217 Bcast:74.82.173.223 Mask:255.255.255.224 
Summry info: RX bytes:203692709 (194.2 MiB) TX bytes:93525930 (89.1 MiB) 
eth0 Receive Bytes: 573 Packets: 3 
eth0 Send Bytes: 3086 Packets: 3 
eth0 Receive Bytes: 378 Packets: 7 
eth0 Send Bytes: 11236 Packets: 7 
eth0 Receive Bytes: 324 Packets: 6 
eth0 Send Bytes: 444 Packets: 2 
eth0 Receive Bytes: 54 Packets: 1 
eth0 Send Bytes: 0 Packets: 0 

具体脚本的内容如下，几乎不需要修改，就可以拿到任何机器上去使用了。

[root@74-82-173-217 ~]# cat net.sh 
#! /bin/bash 
#Author: Vogts WangTao 2008-12-18 
#Get summry info 
echo "Current Ip: "`/sbin/ifconfig eth0 | grep inet` 
echo "Summry info: "`/sbin/ifconfig eth0 | grep bytes` 
#sleep 1 second ,monitor eth0 
while true 
do 
receive1=`cat /proc/net/dev|grep eth0 | awk '{print$1}'|sed -s 's/eth0://g'` 
receive_pack1=`cat /proc/net/dev|grep eth0 | awk '{print$2}'` 
send1=`cat /proc/net/dev|grep eth0 | awk '{print$9}'` 
send_pack1=`cat /proc/net/dev|grep eth0 | awk '{print$10}'` 
sleep 1 
receive2=`cat /proc/net/dev|grep eth0 | awk '{print$1}'|sed -s 's/eth0://g'` 
receive_pack2=`cat /proc/net/dev|grep eth0 | awk '{print$2}'` 
receive_cnt=`expr $receive2 - $receive1` 
receive_pack_cnt=`expr $receive_pack2 - $receive_pack1` 
send2=`cat /proc/net/dev|grep eth0 | awk '{print$9}'` 
send_pack2=`cat /proc/net/dev|grep eth0 | awk '{print$10}'` 
send_cnt=`expr $send2 - $send1` 
send_pack_cnt=`expr $send_pack2 - $send_pack1` 
echo 'eth0 Receive Bytes:' $receive_cnt ' Packets:' $receive_pack_cnt 
echo 'eth0 Send Bytes:' $send_cnt ' Packets:' $send_pack_cnt 
done 

linux shell命令的常用快捷键
Ctrl+a切换到命令行开始Ctrl+e切换到命令行末尾Ctrl+l清除屏幕内容Ctrl+u清除剪切光标之前的内容Ctrl+k剪切清除光标之后的内容Ctrl+y复制剪切板里的内容Ctrl+

linux shell的输出效果修改方法(界面颜色)
文本终端的颜色可以使用ANSI非常规字符序列来生成。举例：echo-e"33[44;37;5mME33[0mCOOL"以上命令设置背景成为蓝色，前景白色，闪烁光标，输出字符ME，

linux中批量修改文件名的脚本代码
使用rename命令========================NAMErename-RenamefilesSYNOPSISrenamefromtofile...========================#!/bin/shINIFILE="./dirlist.ini"CURPATH=$(pwd)forSERVERPATHin$(cut-d:-f1$INIFILE)docd