第一步：首先下载本书配套的源码unpv13e.tar.gz

第二步：解压后进入根文件夹有一个README

4	Execute the following from the src/ directory:     5	     6	    ./configure    # try to figure out all implementation differences     7	     8	    cd lib         # build the basic library that all programs need     9	    make           # use "gmake" everywhere on BSD/OS systems    10	    11	    cd ../libfree  # continue building the basic library    12	    make    13	    14	    cd ../libroute # only if your system supports 4.4BSD style routing sockets    15	    make           # only if your system supports 4.4BSD style routing sockets    16	    17	    cd ../libxti   # only if your system supports XTI    18	    make           # only if your system supports XTI    19	    20	    cd ../intro    # build and test a basic client program    21	    make daytimetcpcli    22	    ./daytimetcpcli 127.0.0.1    23	    24	If all that works, you're all set to start compiling individual programs.

第三步：由于我的是ubuntu。因此运行上面的6 8 9 11 12

即在根文件夹下运行

./configure

然后

cd lib

make

在进入libfree 运行make

cd ../libfree

make

第四步（非常重要）：

cp ./lib/unp.h /usr/include/cp ./config.h /usr/include/

然后进入intro编译第一个程序就可以

cd ../intro    make daytimetcpcli ./daytimetcpcli 127.0.0.1

发现报错：connect error: Connection refused

这样的情况说明server没有启动daytime服务！

第五步：

启动daytime服务

sudo apt-get install xinetd

sudo vi /etc/xinetd.d/daytime 将disable =yes改为no

然后重新启动并执行程序就可以看到结果：

/etc/init.d/xinetd restartRather than invoking init scripts through /etc/init.d, use the service(8)utility, e.g. service xinetd restartSince the script you are attempting to invoke has been converted to anUpstart job, you may also use the stop(8) and then start(8) utilities,e.g. stop xinetd ; start xinetd. The restart(8) utility is also available.xinetd stop/waitingxinetd start/running, process 21975root@wl-Lenovo-B590:/myworkspace/unixnetwork/unpv13e/intro# ./daytimetcpcli 127.0.0.118 APR 2014 14:03:08 CST