Linux之awk 练习题--（只包含练习题）

答案见： https://www.cnblogs.com/joyware/p/16645516.html

1.在/etc/shadow文件中，如果第二字段为！！则输出该行，如果为*则输出第一字段，都不是则输出第五字段。

2.获取本机eth0网卡IP.

3. 在/etc/passwd 中，打印获取到的UID小于100的值？

4.过滤掉下面文本konge.txt空行。

[root@localhost home]# cat konge.txt 
AAA

BBB

CCC

DDD
[root@localhost home]#

5.1统计日志文件xxx.log每个shopId出现的错误的次数.

5.2统计日志文件xxx.log每个shopId出现的错误的次数.

[root@ecs-76840553 home]# cat xxx.log 
00:09:07.655 [showcase_backend][ShowcaseServiceImpl] WARN  - showcase add recommend from taobao failed |shopId=1482502318|itemId=548320850657||530|Remote service error|isv.item-recommend-service-error:SAVE_REQUEST_TOO_MANY_TIMES|
00:09:07.673 [showcase_backend][topsdk] ERROR - 2017-06-27 00:09:07.673^_^xxxxxxx^_^taobao.item.recommend.add^_^10.28.42.60^_^Linux^_^18^_^http://gwx.api.taobao.com/router/rest^_^app_key=xxxxx&partner_id=top-sdk-java-20170607&method=taobao.item.recommend.add&v=2.0&session=xxxxxxxx&format=json&sign_method=hmac&num_iid=5483473847602&timestamp=2017-06-27+00%3A09%3A07^_^{"error_response":{"code":530,"msg":"Remote service error","sub_code":"isv.item-recommend-service-error:SAVE_REQUEST_TOO_MANY_TIMES","sub_msg":"橱窗推荐商品失败","request_id":"qm4l3wu2cnhu"}}
00:09:07.673 [showcase_backend][ShowcaseServiceImpl] WARN  - showcase add recommend from taobao failed |shopId=14825032138|itemId=548347847602||530|Remote service error|isv.item-recommend-service-error:SAVE_REQUEST_TOO_MANY_TIMES|
00:09:07.695 [showcase_backend][ShowcaseServiceImpl] WARN  - showcase add recommend from taobao failed |shopId=148250232138|itemId=546199835284||530|Remote service error|isv.item-recommend-service-error:SAVE_REQUEST_TOO_MANY_TIMES|橱

6. 每个在 start与end块内，查询第一次出现的 i hate you 行

[root@ecs-76840553 myawk]# cat 1.txt 
hate you 1
start 1
i love you
i hate you 2
i hate you3
end 1
start 2
i love you 
i hate you 22
i hate you 4
end 2
start 2
i love you
i hate you 33
i hate you 4
end 2
start 2
i love you
i hate you 44
i hate you 4
end 2
[root@ecs-76840553 myawk]# 

 7.找出含有2的行。

[root@ecs-76840553 myawk]# cat 2.txt 
111
121
333
234
444
552
234
555
626
[root@ecs-76840553 myawk]# 

  8.统计机器中网络连接各个状态个数. netstat -a （tcp）

9.如何使用awk查询指定的字符。

10.10.49.100
10.10.49.101
10.10.49.100
10.10.49.102
10.10.49.101
10.12.49.100