ubuntu启动daytime服务

在linux高性能服务器编程中的例子中使用daytime服务

1.端口号

cat /etc/services | grep "daytime"

daytime服务的众所周知的端口号是13.

2.安装xinetd服务

sudo apt-get instlall xinetd

3.启动服务

sudo vi /etc/xinetd.d/daytime 

将disable配置项修改由yes->no

# default: off
# description: An internal xinetd service which gets the current system time
# then prints it out in a format like this: "Wed Nov 13 22:30:27 EST 2002".
# This is the tcp version.
service daytime
{disable		= yestype		= INTERNALid		= daytime-streamsocket_type	= streamprotocol	= tcpuser		= rootwait		= no
}# This is the udp version.
service daytime
{disable		= yestype		= INTERNALid		= daytime-dgramsocket_type	= dgramprotocol	= udpuser		= rootwait		= yes
}

4.重启服务：

sudo /etc/init.d/xinetd restart

5.用netcat进行测试
nc localhost daytime