应站长要求每天给大家介绍一种GNU小工具，希望能对大家系统管理工作带来方便！
安装 bwm-ng
官网：
- cd /usr/src
wget
tar zxvf
bwm-ng-0.6.tar.gz
cd bwm-ng-0.6
./configure && make &&
make install
1.监控网络：
bwm-ng -u bits -d
bwm-ng -u bytes -d
复制代码 
2.监控磁盘IO
bwm-ng -u bytes -i disk
复制代码 ![2011-5-11 9-39-24.png]( "2011-5-11 9-39-24.png")
# bwm-ng --help
//更详细的使用大家一起挖掘
Bandwidth Monitor NG (bwm-ng) v0.6
Copyright (C) 2004-2007
Volker Gropp <>
USAGE: bwm-ng [OPTION]
... [CONFIGFILE]
displays current ethernet interfaces
stats
Options:
-t, --timeout
displays stats every
(1msec = 1/1000sec)
default:
500
-d, --dynamic [value] show values dynamicly (Byte KB or MB)
-a,
--allif [mode] where mode is one of:
0=show
only up (and selected) interfaces
1=show all up
interfaces (default)
2=show all and down
interfaces
-I, --interfaces show only interfaces in
(comma seperated), or
if list is
prefaced with % show all but interfaces
in
list
-S, --sumhidden [value] count hidden interfaces for total
-A,
--avglength sets the span of average stats (Default 30s)
-D,
--daemon [value] fork into background and daemonize
-h, --help
displays this help
-V, --version print version
info
Input:
-i, --input input method, one of: proc
netstat disk
-f, --procfile filename to read raw data from.
(/proc/net/dev)
--diskstatsfile filename to read diskstats
(Linux 2.6+) from. (/proc/diskstats)
--partitionsfile
filename to read diskstats (Linux 2.4) from.
(/proc/partitions)
Output:
-o, --output output
method, one of:
plain, curses, curses2, csv,
html
-u, --unit unit to show. one of bytes, bits,
packets, errors
-T, --type type of stats. one of rate,
max, sum, avg
-C, --csvchar delimiter for csv
-F,
--outfile output file for csv and html (default stdout)
-R,
--htmlrefresh meta refresh for html output
-H, --htmlheader
show and frame for html output
-c, --count
number of query/output for plain & csv
-N, --ansiout
disable ansi codes for plain output
(ie 1
for one single output)
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