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Linux 运维神器:Shell 脚本用法

  • 2026-08-18 23:10:35
Linux 运维神器:Shell 脚本用法
刚接触 Linux 总觉得敲命令繁琐，学会 Shell 脚本直接解放双手！整理日常高频实用写法，零基础也能上手。

Shell 可以批量执行命令、自动备份日志、监控服务器负载、定时清理垃圾文件，省去反复手动操作。基础循环、判断语句、变量传参是核心，写好定时任务搭配 crontab，实现服务器自动化运维。

📌分享小技巧：

脚本开头标注解释器，重要步骤加注释，写完先测试权限再运行，避免报错。不管是运维、网工还是数据岗，掌握 Shell 能大幅提升工作效率，减少重复机械操作，自学收藏慢慢练！

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  2. 运行时间 : 0.155607s [ 吞吐率：6.43req/s ] 内存消耗：4,510.37kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=1d7be433198289ea933b1196d767c020
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  1. CONNECT:[ UseTime:0.000826s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001706s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000776s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000724s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001430s ]
  6. SELECT * FROM `set` [ RunTime:0.007621s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001481s ]
  8. SELECT * FROM `article` WHERE `id` = 504865 LIMIT 1 [ RunTime:0.000992s ]
  9. UPDATE `article` SET `lasttime` = 1787298224 WHERE `id` = 504865 [ RunTime:0.027579s ]
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0.160340s