linux cp 命令的使用疑问
大家好，我有一堆文件，想快速复制。
我举个例子：
主文件夹为main，
其下面有folder1/folder11/folder111/x.txt
folder2/folder22/folder222/folder2222/y.txt
当然这些子文件夹中可能还有其他文件。
请问如何写cp命令，使之只复制*.txt文件，并且保持目录结构。
可能处在不同的文件夹中的txt文件可能有相同的文件名，也要保证给出警告。
[解决办法]
zhblue@240x:~/tmp$ find
.
./target
./main
./main/folder2
./main/folder2/folder22
./main/folder2/folder22/y.txt
./main/folder1
./main/folder1/forlder11
./main/folder1/forlder11/x.txt
./main/folder3
zhblue@240x:~/tmp$ find main -name *.txt -exec cp --parents {} target \;
zhblue@240x:~/tmp$ find
.
./target
./target/main
./target/main/folder2
./target/main/folder2/folder22
./target/main/folder2/folder22/y.txt
./target/main/folder1
./target/main/folder1/forlder11
./target/main/folder1/forlder11/x.txt
./main
./main/folder2
./main/folder2/folder22
./main/folder2/folder22/y.txt
./main/folder1
./main/folder1/forlder11
./main/folder1/forlder11/x.txt
./main/folder3
