我的主要目标是找出Linux机器中有效接口的私有IP地址。hostname -I | awk '{print $1}') but does it guarantees that i get the host instance IP.
2) ifconfig | grep-Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -
我想用shell/bash脚本从字符串中提取url,如果字符串中有多个url,那么应该只返回第一个。Input: Take a look at this site: http://www.google.com/ and you'll find your answer
Output: http://www.google.com
Inpu