复制单个文件

将 foo.txt 从/path/to/source/复制到/path/to/target/folder/

cp /path/to/source/foo.txt /path/to/target/folder/

将 foo.txt 从/path/to/source/复制到/path/to/target/folder/到一个名为 bar.txt 的文件中

cp /path/to/source/foo.txt /path/to/target/folder/bar.txt