linux shell脚本学习

命令好麻烦，艰苦啊，任重而道远~~~

多重判定，为了理顺自己的逻辑关系~~~

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#!/bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH read -p "qing shu ru Y/N:" yn if [ "$yn" == "Y" ];then         echo "okY" else         if [ "$yn" == "y" ];then         echo "oky"         else                 if [ "$yn" == "N" ];then                 echo "NON"                 else                         if [ "$yn" == "n" ];then                         echo "NOn"                         else                                 echo "I don't know what your choice is" && exit 0                         exit 0                         fi                 exit 0                 fi         exit 0         fi         exit 0 fi

输入Y 输出okY

输入y 输出oky

输入N 输出NON

输入n 输出NOn

其实有更简单的办法，晚上再写。

今天晚上重新搭建环境，从安装系统开始~！