受到知乎上一个问题的启发，打算写一个简单的脚本。

源码：HackCloudDrive 已经上传了。README写得很清楚了。

可以顺道看一下shell ，也是很有意思的，改进了一下输入的参数，使这个脚本更加强大，哈哈。

HackCloudDrive

Use a shell to change the content of files.

Why I write this shell

This is a shell to chane the content of files,I write this in order to change the Hash of files in *** field.

reference

scripts-to-traverse-folder-recursively

how to use

1. Download the MagicShell shell

2. chmod +x MagicShell

3. The parameter input can be

   1. a directory

   ./MagicShell /Users/Downloads/testHash

   2. directories

      ./MagicShell /Users/Downloads/testHashDirectory1 ./MagicShell /Users/Downloads/testHashDirectory2

   3. a single file

      ./MagicShell   /Users/Downloads/testHash/		file1.txt

   4. files

      ./MagicShell   /Users/Downloads/testHash/file1.txt /Users/Downloads/testHash/file2.txt

at last

Those who do not understand UNIX are condemned to reinvent it, poorly.

—Henry Spencer

Where To Go From Here?

• Advanced Bash-Scripting Guide
• Unix Shell Programming
• Linux Shell Scripting Tutorial - A Beginner’s handbook