http://jackxiang.com/index.php zh-cn http://jackxiang.com/post// jack <xdy108@126.com> Thu, 15 Sep 2011 07:54:32 +0000 http://jackxiang.com/post// /sbin/ifconfig | /bin/awk 'BEGIN{RS=""} /eth[0-9][^:]/ {print substr($7,6)}' | tail -1
法二：
ifconfig  |awk  -F'addr:|  Bcast'   '/Bcast/{print $2}'


由于不同系统中ifconfig返回信息的格式有一定差别，故分开讨论：

Linux:
LC_ALL=C ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'
FreeBSD/OpenBSD:
LC_ALL=C ifconfig  | grep -E 'inet.[0-9]' | grep -v '127.0.0.1' | awk '{ print $2}'
Solaris:
LC_ALL=C ifconfig -a | grep inet | grep -v '127.0.0.1' | awk '{ print $2}'
三段代码的原理类似，都是先获取含有IP的行，再去掉含有127.0.0.1的行。最后获取IP所在的列
#!/bin/sh # Shell script scripts to read ip address # ------------------------------------------------------------------------- # Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version 2.0 or above # ------------------------------------------------------------------------- # This script is part of nixCraft shell script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # ------------------------------------------------------------------------- # Get OS name OS=`uname` IO="" # store IP case $OS in    Linux) IP=`ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'`;;    FreeBSD|OpenBSD) IP=`ifconfig  | grep -E 'inet.[0-9]' | grep -v '127.0.0.1' | awk '{ print $2}'` ;;    SunOS) IP=`ifconfig -a | grep inet | grep -v '127.0.0.1' | awk '{ print $2} '` ;;    *) IP="Unknown";; esac echo "$IP"

参考：http://linux-wiki.cn/wiki/Shell%E4%B8%AD%E8%8E%B7%E5%8F%96%E5%BD%93%E5%89%8DIP%E5%9C%B0%E5%9D%80 ]]> http://jackxiang.com/post//#blogcomment <user@domain.com> Thu, 01 Jan 1970 00:00:00 +0000 http://jackxiang.com/post//#blogcomment