- 
				           		只使用一个管道>。值得一看使用命令重定向操作符。
						        					            	 Reads the output from one command and writes it to the input of another command. Also known as a pipe.
								    										 
								    				            	 youdao 
- 
				           		只使用一个管道>。值得一看使用命令重定向操作符。
						        					            	 Reads the output from one command and writes it to the input of another command. Also known as a pipe.
								    										 
								    				            	 youdao