比如用awk 处理netstat 返回的IP地址，为了去掉地址中的端口号，可以用如下命令：
netstat -anpt |grep EST|awk ‘{print $5}’ |while read addr; do echo $addr|awk -F’:’ ‘{print $1}’; done
先打印 “IP：端口”，然后管道重定向给while,循环读取行数据，再一行行输出给awk进行二次处理
2025-04-29
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