每天一命令（9）echo (display a line of text)

echo (display a line of text)

man echo 查看命令文档

-n do not output the trailing newline 输出不换行
-e enable interpretation of backslash escapes 让转义字符起作用
-E disable interpretation of backslash escapes (default) 禁用转义字符

下面栗子：

root@myql01  ~# echo 123123root@myql01  ~# echo $PATH/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/binroot@myql01  ~# echo `date`Mon Jun 13 10:41:11 CST 2016root@myql01  ~# echo datedateroot@myql01  ~# echo "date"dateroot@myql01  ~# echo "$HOME"/rootroot@myql01  ~# name=zhangsanroot@myql01  ~# echo $namezhangsanroot@myql01  ~# echo "1234556\n123123";1234556\n123123root@myql01  ~# echo -e "1234556\n123123";1234556123123root@myql01  ~# echo -n "1234556\n123123";1234556\n123123root@myql01  ~# echo -ne "1234556\n123123";1234556123123root@myql01  ~# echo {1..10}1 2 3 4 5 6 7 8 9 10root@myql01  ~# echo {a..z}a b c d e f g h i j k l m n o p q r s t u v w x y z