请问在一个命令上加什么参数可以实现下面命令的内容在同一行输出。 echo "zhaokang";echo "zhaokang"

[root@zhaokang test]# echo "zhaokang";echo "zhaokang"
zhaokang
zhaokang

解答：

[root@zhaokang test]# echo -n "zhaokang";echo "zhaokang"
zhaokangzhaokang

说明：此题考察echo的-n 参数。echo的命令经常用，需要总结如下：

echo

　　-n do not output the trailing newline

　　-e enable interpretation of backslash escapes

加-n 是取消换行符

加-e参数是可以使用转义字符

[root@zhaokang test]# echo -ne "zhaokang\t";echo "zhaokang"
zhaokang        zhaokang

[root@zhaokang test]# echo -e "zhaokang\tguobaoyan"
zhaokang        guobaoyan

[root@zhaokang test]# echo -e "zhaokang\nguobaoyan"
zhaokang
guobaoyan