Nethogs 是一个终端下的网络流量监控工具，它的特别之处在于能够显示每一个进程的带宽占用情况，这样能够更直观获取网络使用情况。它支持 IPv4 和 IPv6 协议、支持本地网卡及 PPP 链接。

下载：

从SourceForge上下载nethogs-0.8.0.tar.gz

使用wget下载：

wget http://sourceforge.net/projects/nethogs/files/nethogs/0.8/nethogs-0.8.0.tar.gz/download

安装：

安装之前须要先 yum install ncurses*

[root@localhost Desktop]# yum install ncurses*

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Setting up Install Process

Package ncurses-5.7-3.20090208.el6.x86_64 already installed and latest version

Package ncurses-libs-5.7-3.20090208.el6.x86_64 already installed and latest version

Package ncurses-base-5.7-3.20090208.el6.x86_64 already installed and latest version

Resolving Dependencies

--> Running transaction check

---> Package ncurses-devel.x86_64 0:5.7-3.20090208.el6 will be installed

---> Package ncurses-static.x86_64 0:5.7-3.20090208.el6 will be installed

---> Package ncurses-term.x86_64 0:5.7-3.20090208.el6 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================

 Package                                    Arch                               Version                                           Repository                        Size

========================================================================================================================================================================

Installing:

 ncurses-devel                              x86_64                             5.7-3.20090208.el6                                base                             642 k

 ncurses-static                             x86_64                             5.7-3.20090208.el6                                base                             546 k

 ncurses-term                               x86_64                             5.7-3.20090208.el6                                base                             547 k

Transaction Summary

========================================================================================================================================================================

Install       3 Package(s)

Total download size: 1.7 M

Installed size: 6.8 M

Is this ok [y/N]: y

Downloading Packages:

(1/3): ncurses-devel-5.7-3.20090208.el6.x86_64.rpm                                                                                               | 642 kB     00:01

(2/3): ncurses-static-5.7-3.20090208.el6.x86_64.rpm                                                                                              | 546 kB     00:00

(3/3): ncurses-term-5.7-3.20090208.el6.x86_64.rpm                                                                                                | 547 kB     00:02

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Total                                                                                                                                   284 kB/s | 1.7 MB     00:06

Running rpm_check_debug

Running Transaction Test

Transaction Test Succeeded

Running Transaction

  Installing : ncurses-devel-5.7-3.20090208.el6.x86_64                                                                                                              1/3

  Installing : ncurses-static-5.7-3.20090208.el6.x86_64                                                                                                             2/3

  Installing : ncurses-term-5.7-3.20090208.el6.x86_64                                                                                                               3/3

  Verifying  : ncurses-term-5.7-3.20090208.el6.x86_64                                                                                                               1/3

  Verifying  : ncurses-static-5.7-3.20090208.el6.x86_64                                                                                                             2/3

  Verifying  : ncurses-devel-5.7-3.20090208.el6.x86_64                                                                                                              3/3 

Installed:

  ncurses-devel.x86_64 0:5.7-3.20090208.el6              ncurses-static.x86_64 0:5.7-3.20090208.el6              ncurses-term.x86_64 0:5.7-3.20090208.el6             

Complete!

解压文件：

tar -zxvf nethogs-0.8.0.tar.gz

切换文件夹：

cd nethogs

编译安装：

make && make install

make出错了： 

[root@localhost nethogs]# make && make install

cc -g -Wall -Wextra -c decpcap.c

decpcap.c:7:18: error: pcap.h: No such file or directory

In file included from decpcap.c:8:

decpcap.h:34: error: expected specifier-qualifier-list before ‘pcap_t’

decpcap.c:14: error: expected ‘)’ before ‘*’ token

decpcap.c: In function ‘dp_open_offline’:

decpcap.c:48: error: ‘pcap_t’ undeclared (first use in this function)

decpcap.c:48: error: (Each undeclared identifier is reported only once

decpcap.c:48: error: for each function it appears in.)

decpcap.c:48: error: ‘temp’ undeclared (first use in this function)

decpcap.c:48: warning: implicit declaration of function ‘pcap_open_offline’

decpcap.c:55: warning: implicit declaration of function ‘dp_fillhandle’

decpcap.c: In function ‘dp_open_live’:

decpcap.c:60: error: ‘pcap_t’ undeclared (first use in this function)

decpcap.c:60: error: ‘temp’ undeclared (first use in this function)

decpcap.c:60: warning: implicit declaration of function ‘pcap_open_live’

decpcap.c: In function ‘dp_addcb’:

decpcap.c:74: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c: In function ‘dp_parse_tcp’:

decpcap.c:84: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:86: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:87: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c: In function ‘dp_parse_ip’:

decpcap.c:99: error: dereferencing pointer to incomplete type

decpcap.c:103: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:105: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:106: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c: In function ‘dp_parse_ip6’:

decpcap.c:126: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:128: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:129: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c: In function ‘dp_parse_ethernet’:

decpcap.c:150: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:152: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:153: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c: In function ‘dp_parse_ppp’:

decpcap.c:196: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:198: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:199: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c: In function ‘dp_parse_linux_cooked’:

decpcap.c:238: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:240: error: ‘struct dp_handle’ has no member named ‘callback’

decpcap.c:241: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c: In function ‘dp_pcap_callback’:

decpcap.c:270: error: ‘struct dp_handle’ has no member named ‘userdata_size’

decpcap.c:271: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c:271: error: ‘struct dp_handle’ has no member named ‘userdata_size’

decpcap.c:273: error: ‘struct dp_handle’ has no member named ‘linktype’

decpcap.c:274: error: ‘DLT_EN10MB’ undeclared (first use in this function)

decpcap.c:277: error: ‘DLT_PPP’ undeclared (first use in this function)

decpcap.c:280: error: ‘DLT_LINUX_SLL’ undeclared (first use in this function)

decpcap.c:283: error: ‘DLT_RAW’ undeclared (first use in this function)

decpcap.c:284: error: ‘DLT_NULL’ undeclared (first use in this function)

decpcap.c:289: error: ‘struct dp_handle’ has no member named ‘linktype’

decpcap.c: In function ‘dp_dispatch’:

decpcap.c:296: error: ‘struct dp_handle’ has no member named ‘userdata’

decpcap.c:297: error: ‘struct dp_handle’ has no member named ‘userdata_size’

decpcap.c:298: warning: implicit declaration of function ‘pcap_dispatch’

decpcap.c:298: error: ‘struct dp_handle’ has no member named ‘pcap_handle’

decpcap.c: In function ‘dp_setnonblock’:

decpcap.c:302: warning: implicit declaration of function ‘pcap_setnonblock’

decpcap.c:302: error: ‘struct dp_handle’ has no member named ‘pcap_handle’

decpcap.c: In function ‘dp_geterr’:

decpcap.c:307: warning: implicit declaration of function ‘pcap_geterr’

decpcap.c:307: error: ‘struct dp_handle’ has no member named ‘pcap_handle’

make: *** [decpcap.o] Error 1

还是缺少依赖的东西，运行下面命令安装：

yum install libpcap-dev libncurses5-dev

[root@localhost nethogs]# yum install libpcap-dev libncurses5-dev

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Setting up Install Process

No package libpcap-dev available.

No package libncurses5-dev available.

Error: Nothing to do

[root@localhost nethogs]# yum  -y install libpcap-devel  ncurses-devel

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Setting up Install Process

Package ncurses-devel-5.7-3.20090208.el6.x86_64 already installed and latest version

Resolving Dependencies

--> Running transaction check

---> Package libpcap-devel.x86_64 14:1.4.0-1.20130826git2dbcaa1.el6 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

===============================================================================================================================================================================================

 Package                                      Arch                                  Version                                                          Repository                           Size

===============================================================================================================================================================================================

Installing:

 libpcap-devel                                x86_64                                14:1.4.0-1.20130826git2dbcaa1.el6                                base                                114 k

Transaction Summary

===============================================================================================================================================================================================

Install       1 Package(s)

Total download size: 114 k

Installed size: 160 k

Downloading Packages:

libpcap-devel-1.4.0-1.20130826git2dbcaa1.el6.x86_64.rpm                                                                                                                 | 114 kB     00:00

Running rpm_check_debug

Running Transaction Test

Transaction Test Succeeded

Running Transaction

  Installing : 14:libpcap-devel-1.4.0-1.20130826git2dbcaa1.el6.x86_64                                                                                                                      1/1

  Verifying  : 14:libpcap-devel-1.4.0-1.20130826git2dbcaa1.el6.x86_64                                                                                                                      1/1 

Installed:

  libpcap-devel.x86_64 14:1.4.0-1.20130826git2dbcaa1.el6

Complete!

再运行：make && make install 

[root@localhost nethogs]# make && make install

cc -g -Wall -Wextra -c decpcap.c

decpcap.c: In function ‘dp_open_live’:

decpcap.c:60: warning: passing argument 5 of ‘pcap_open_live’ discards qualifiers from pointer target type

/usr/include/pcap/pcap.h:349: note: expected ‘char *’ but argument is of type ‘const char *’

g++ -g -Wall -Wextra -c cui.cpp -DVERSION=\"0\" -DSUBVERSION=\"8\" -DMINORVERSION=\"0\"

g++ -g -Wall -Wextra -c inode2prog.cpp

g++ -g -Wall -Wextra -c conninode.cpp

g++    -c -o devices.o devices.cpp

g++ -g -Wall -Wextra nethogs.cpp packet.o connection.o process.o refresh.o decpcap.o cui.o inode2prog.o conninode.o devices.o -o nethogs -lpcap -lm -lncurses -DVERSION=\"0\" -DSUBVERSION=\"8\" -DMINORVERSION=\"0\"

g++ -g -Wall -Wextra decpcap_test.cpp decpcap.o -o decpcap_test -lpcap -lm

install -d -m 755 /usr/local/sbin

install -m 755 nethogs /usr/local/sbin

install -d -m 755 /usr/local/share/man/man8/

install -m 644 nethogs.8 /usr/local/share/man/man8/

成功安装了！

运行：nethogs

[root@localhost nethogs]# nethogs

Waiting for first packet to arrive (see sourceforge.net bug 1019381)

NetHogs version 0.8.0

  PID USER     PROGRAM                                                                                                                                     DEV        SENT      RECEIVED

3227  root     sshd: root@pts/2                                                                                                                            eth0       0.666	  0.059 KB/sec

?

root     unknown TCP                                                                                                                                            0.000	  0.000 KB/sec

  TOTAL                                                                                                                                                               0.666       0.059 KB/sec

下图显示各进程当前网络使用情况：


按“m”键能够切换到统计视图，显示各进程总的网络使用情况


按“Ctrl+C”或“q”退出监控

使用帮助：

[root@localhost ~]# nethogs --help

nethogs: invalid option -- '-'

usage: nethogs [-V] [-b] [-d seconds] [-t] [-p] [device [device [device ...]]]

		-V : 显示版本号信息，注意是大写字母V.

		-d : 延迟更新刷新速率，以秒为单位。默认值为 1.

		-t : 跟踪模式.

		-b : bug 狩猎模式 — — 意味着跟踪模式.

		-p : 混合模式（不推荐）.

		设备 : 要监视的设备名称. 默觉得 eth0

当 nethogs 运行时, 按:

 q: 退出

 m: 总数和当前使用情况模式之间切换

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