用这个 sort -n -t \. -k4 ip.txt 在man sort中: -k, --key=POS1[,POS2] start a key at POS1, end it at POS2 (origin 1) 2009/5/12 Dongsheng Song <dongsheng.song@gmail.com>: > 用 sort 得不到期望的结果: > > $ cat ip.txt | sort -t . -n > 192.168.2.234 > 192.168.2.237 > 192.168.2.246 > 192.168.2.247 > 192.168.2.28 > 192.168.2.50 > 192.168.2.51 > > 谢谢! > -- Best Regards, Alyex