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Shell入门一篇搞懂,Linux命令没你想的复杂

  • 2026-08-20 15:22:57
Shell入门一篇搞懂,Linux命令没你想的复杂
哈喽呀~又见面啦，我是霞妹。Shell不知道大家有没有听过呢，看这串英文是不是很高深？其实你每次打开终端敲命令，背后都靠它在"翻译"。今天用几分钟，把Shell从概念到实操一次性讲清楚，零基础也能看懂。
一句话理解Shell：你就是老板，Shell是秘书，内核是执行人。你发指令→Shell翻译→内核干活。
Shell不只是敲命令那么简单，它还能写脚本、做条件判断、玩管道流。说白了，重复性工作交给脚本，你只管发号施令。
光会敲单条命令还不够，真正高效的是写脚本。一个hello.sh就能跑出交互效果，if判断和for循环也是基础中的基础。
管道和重定向是Shell的灵魂操作——把一个命令的输出喂给另一个命令，像流水线一样串联起来，效率直接翻倍。
以上就是Shell入门的一些核心内容了，从认识Shell到写脚本、用管道，掌握这些基本就能应付日常Linux操作了。怎么样，是不是觉得Shell命令其实很简单。
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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:0.000939s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001427s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.006953s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.014447s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001440s ]
  6. SELECT * FROM `set` [ RunTime:0.005863s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001980s ]
  8. SELECT * FROM `article` WHERE `id` = 504365 LIMIT 1 [ RunTime:0.001177s ]
  9. UPDATE `article` SET `lasttime` = 1787342680 WHERE `id` = 504365 [ RunTime:0.005355s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000716s ]
  11. SELECT * FROM `article` WHERE `id` < 504365 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.006087s ]
  12. SELECT * FROM `article` WHERE `id` > 504365 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.009632s ]
  13. SELECT * FROM `article` WHERE `id` < 504365 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.033162s ]
  14. SELECT * FROM `article` WHERE `id` < 504365 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.012675s ]
  15. SELECT * FROM `article` WHERE `id` < 504365 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.015728s ]
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