udhcpc后台运行的方法【总结】.pdf

udhcpc 后台运行的方法【总结】 udhcpc 后台运行的方法【总结】 2010-11-30 11:13:27| 分类： dhcp | 标签： |字号大中 小 订阅 最近在做项目的时候卡在了 dhcp 处，当没有网络 的时候，板子一直发送 dhcp 请求，导致程序不往下执行， 解决的办法是把它切换到后台运行，可是如何切换到后台呢， 有办法，它自带参数可以实现该功能。如下： udhcpc -b -i eth0 -p /var/run/udhcpc.pid 解释一下， -b 就是切换到后台指令， -i 是指定使用哪个网络 接口，双网卡的时候一定要使用它来指定 eth0 or eth1 。 业务不熟练害死人啊，所以只要多看看源码，一般问题都能 搞定。 下面引用网友的一篇文章： udhcpc 的配置记录 udhcpc scripts Here's some debian scripts I wrote for udhcpc 0.9.6. I wanted to make it easy to run local scripts for DHCP changes so I created /etc/udhcpc.d. All the /usr/share/udhcpc/default.* scripts have been merged into /etc/udhcpc.d/S50default. S99local is an example script that patches resolv.conf and calls a DNS update script. /etc/init.d/udhcpc /etc/udhcpc.script /etc/udhcpc.d/S50default /etc/udhcpc.d/S99localLast modified: Mon Feb 4 10:23:49 PST 2002 单调的分割线 /README.udhcpc udhcp client (udhcpc) The udhcp client negotiates a lease with the DHCP server and notifies a set of scripts when a leases is obtained or mand line options The command line options for the udhcp client are:-c, --clientid=CLIENTID Client identifier -H, --hostname=HOSTNAME Client hostname -h, Alias for -H -f, --foreground Do not fork after getting lease -b, --background Fork to background if lease cannot be immediately negotiated. -i, --interface=INTERFACE Interface to use (default: eth0) -n, --now Exit with failure if lease cannot be immediately negotiated. -p, --pidfile=file Store process ID of daemon i