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[root@xsx ~]# netstat -an|grep -i syn_recv|awk ‘{print $5}‘|awk -F\: ‘{print $1}‘|sort|uniq -c
1 149.56.41.159
grep -i (不区分大小写)
[root@bass Desktop]# grep -i "test" test.txt this is test THIS IS TEST 1 this is TEST 2 this is test3 [root@bass Desktop]# grep "test" test.txt this is test this is test3
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原文地址：http://www.cnblogs.com/bass6/p/5577032.html
