[Linux]Linux环境，如何查找一个目录下所有包含特定字符串的文件

在 Linux 环境中，如果想要查找一个目录下，所有包含某一个特定字符串的文件，可以使用 find 命令、xargs 命令 和 grep 命令的结合来完成查找。

比如，目录结构如下：

$ tree /refresh/home/aaa

/refresh/home/aaa
├── aaa01.txt
├── aaa02.txt
├── bb
│   ├── bb01.txt
│   └── bb02.txt
└── cc
    ├── cc01.txt
    └── cc02.txt

2 directories, 6 files
$

各个文件的内容如下：

$ cat /refresh/home/aaa/aaa01.txt
This is my word aaa001
$

$ cat /refresh/home/aaa/aaa02.txt
This is my word aaa02
$

$ cat /refresh/home/aaa/bb/bb01.txt
Thi is my word bb01

$ cat /refresh/home/aaa/bb/bb02.txt
This is my word bb02

$ cat /refresh/home/aaa/cc/cc01.txt
Thi is my word cc01

$ cat /refresh/home/aaa/cc/cc02.txt
This is my word cc02

现在，我要查找，在 /refresh/home/aaa 目录及其子目录中，所有 包含 my 这个字符串的所有文件，我可以这样执行：

$ find /refresh/home/aaa | xargs grep "my"
/refresh/home/aaa/bb/bb02.txt:This is my word bb02
/refresh/home/aaa/bb/bb01.txt:Thi is my word bb01
/refresh/home/aaa/aaa01.txt:This is my word aaa001
/refresh/home/aaa/cc/cc02.txt:This is my word cc02
/refresh/home/aaa/cc/cc01.txt:Thi is my word cc01
/refresh/home/aaa/aaa02.txt:This is my word aaa02
$