linux echo介紹

 

               1  用途：
                          1）列印資訊，包括：變數的值、字串等
                          2）shell編程中，協助debug程式

 

               2  常用參數：

                          -n：列印資訊之後不換行
                          -e：對字串轉義

 

               3  例子：

                           例子一：
                                      [root@localhost ~]# echo $LANG
                                      zh_CN.UTF-8

                           例子二：
                                      [root@localhost ~]# echo -n "please input your name: ";read name;echo "your name is:$name"
                                      please input your name: think
                                      your name is:think

                           例子三：
                                      [root@localhost ~]# echo -e "hello\fworld"
                                      hello
                                            world