Linux(Ubuntu)安装libpcap

sudo apt-get install libpcap-dev libnids-dev libnet1-dev
正在读取软件包列表... 完成
正在分析软件包的依赖关系树       
正在读取状态信息... 完成       
将会安装下列额外的软件包：
  libnids1.21 libpcap0.8-dev
下列【新】软件包将被安装：
  libnet1-dev libnids-dev libnids1.21 libpcap-dev libpcap0.8-dev
升级了 0 个软件包，新安装了 5 个软件包，要卸载 0 个软件包，有 55 个软件包未被升级。
需要下载 409 kB 的软件包。
解压缩后会消耗掉 1,562 kB 的额外空间。
您希望继续执行吗？ [Y/n] y\
获取：1 http://cn.archive.ubuntu.com/ubuntu/ trusty/main libnet1-dev amd64 1.1.6+dfsg-2ubuntu1 [97.7 kB]
获取：2 http://cn.archive.ubuntu.com/ubuntu/ trusty/universe libnids1.21 amd64 1.23-2 [27.3 kB]
获取：3 http://cn.archive.ubuntu.com/ubuntu/ trusty/universe libnids-dev amd64 1.23-2 [76.0 kB]
获取：4 http://cn.archive.ubuntu.com/ubuntu/ trusty/main libpcap0.8-dev amd64 1.5.3-2 [205 kB]
获取：5 http://cn.archive.ubuntu.com/ubuntu/ trusty/main libpcap-dev all 1.5.3-2 [3,390 B]
下载 409 kB，耗时 4秒 (95.8 kB/s)       
Selecting previously unselected package libnet1-dev.
(正在读取数据库 ... 系统当前共安装有 113678 个文件和目录。)
Preparing to unpack .../libnet1-dev_1.1.6+dfsg-2ubuntu1_amd64.deb ...
Unpacking libnet1-dev (1.1.6+dfsg-2ubuntu1) ...
Selecting previously unselected package libnids1.21.
Preparing to unpack .../libnids1.21_1.23-2_amd64.deb ...
Unpacking libnids1.21 (1.23-2) ...
Selecting previously unselected package libnids-dev.
Preparing to unpack .../libnids-dev_1.23-2_amd64.deb ...
Unpacking libnids-dev (1.23-2) ...
Selecting previously unselected package libpcap0.8-dev.
Preparing to unpack .../libpcap0.8-dev_1.5.3-2_amd64.deb ...
Unpacking libpcap0.8-dev (1.5.3-2) ...
Selecting previously unselected package libpcap-dev.
Preparing to unpack .../libpcap-dev_1.5.3-2_all.deb ...
Unpacking libpcap-dev (1.5.3-2) ...
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
正在设置 libnet1-dev (1.1.6+dfsg-2ubuntu1) ...
正在设置 libnids1.21 (1.23-2) ...
正在设置 libnids-dev (1.23-2) ...
正在设置 libpcap0.8-dev (1.5.3-2) ...
正在设置 libpcap-dev (1.5.3-2) ...
Processing triggers for libc-bin (2.19-0ubuntu6.14) ...
anticode@lanjie:~$