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Linux自学第13天

  • 2026-06-27 16:03:01
Linux自学第13天
今天开始学习Shell教程。Shell是一种应用程序，其实就是操作Linux系统的终端窗口，通过该系统可以访问操作系统的内核服务。
一、shell环境
 #!/bin/bash   #! 告诉系统其后路径所指定的程序即是解释此脚本文件的 Shell 程序。
二、shell脚本编写

使用文本编辑器vim ，新建文件 test.sh，扩展名为 sh（sh代表shell）。

test.sh 输入代码：

#!/bin/bashecho "Hello World !" #echo 命令用于向窗口输出文本。

三、运行shell脚本

1.将代码保存为 test.sh，并 cd 到相应目录：

chmod +x ./test.sh  #使脚本具有执行权限./test.sh  #执行脚本

2、作为解释器参数，直接运行解释器，其参数就是 shell 脚本的文件名。

/bin/sh test.sh/bin/php test.php
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  1. 请求信息 : 2026-07-03 06:43:08 HTTP/2.0 GET : https://f.mffb.com.cn/a/497567.html
  2. 运行时间 : 0.576448s [ 吞吐率：1.73req/s ] 内存消耗：4,737.98kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=545135dd18656f22781fba3f29b308ab
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  1. CONNECT:[ UseTime:0.000405s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000937s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.011712s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.043414s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000662s ]
  6. SELECT * FROM `set` [ RunTime:0.011995s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000635s ]
  8. SELECT * FROM `article` WHERE `id` = 497567 LIMIT 1 [ RunTime:0.050522s ]
  9. UPDATE `article` SET `lasttime` = 1783032188 WHERE `id` = 497567 [ RunTime:0.025611s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.043525s ]
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