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Linux awk 还不是小菜一碟!

  • 2026-08-18 23:12:04
Linux awk 还不是小菜一碟!

Linux awk 还不是小菜一碟！

很多人只会复制 awk 单行命令，却一直搞不懂它为什么处理文本这么丝滑！
awk 本质：自动化逐行字段解析器
它天然把文本看成一张二维表格
👉 行 = 记录 record
👉 列 = 字段 field
执行逻辑超省心：
读取一行 → 自动切割列、刷新内置变量 → 匹配你写的规则执行动作
不需要手写字符串分割、循环截取！
我们只需要思考两件事：筛选哪些行、对这行做什么操作
这就是 awk 碾压普通脚本做日志解析的核心优势✨
📌冷知识小彩蛋
名字来源三位贝尔实验室大佬姓氏首字母
Alfred Aho + Peter Weinberger + Brian Kernighan
1977 年诞生，妥妥经典老牌工具
💡实用感悟
sed 擅长整行替换
awk 擅长按列筛选、统计、计算
日志清洗、统计流量、筛选异常日志，优先选 awk！
#Linux #运维 #shell #awk #后端开发 #命令行

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  1. 请求信息 : 2026-08-21 17:45:34 HTTP/2.0 GET : https://f.mffb.com.cn/a/510145.html
  2. 运行时间 : 0.117113s [ 吞吐率：8.54req/s ] 内存消耗：4,384.23kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=51292ed3b74dd42e17bc7a084c485c0d
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  140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.001037s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001496s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000665s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000614s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001504s ]
  6. SELECT * FROM `set` [ RunTime:0.000600s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001461s ]
  8. SELECT * FROM `article` WHERE `id` = 510145 LIMIT 1 [ RunTime:0.000953s ]
  9. UPDATE `article` SET `lasttime` = 1787305534 WHERE `id` = 510145 [ RunTime:0.012440s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000600s ]
  11. SELECT * FROM `article` WHERE `id` < 510145 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001114s ]
  12. SELECT * FROM `article` WHERE `id` > 510145 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001170s ]
  13. SELECT * FROM `article` WHERE `id` < 510145 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001897s ]
  14. SELECT * FROM `article` WHERE `id` < 510145 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001887s ]
  15. SELECT * FROM `article` WHERE `id` < 510145 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002907s ]
0.120893s