cp - copy files and directories

用法：

       cp [OPTION]  source  dest

DESCRIPTION

       Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.

       -a   拷贝文件及属性

       -i, --interactive

              prompt before overwrite (overrides a previous -n option)

       -l, --link

              hard link files instead of copying

       -n, --no-clobber

              do not overwrite an existing file (overrides a previous -i option)

       -R, -r, --recursive

              copy directories recursively

       -s, --symbolic-link

              make symbolic links instead of copying

       -u, --update

              copy only when the SOURCE file is newer than the destination file or when the destination file is missing

       -v, --verbose

              explain what is being done


示例：
cp source dest

cp -a source dest

cp -r source/ dest/