代码如下，这是我看的鸟哥的书里面的，那个 ~/bin   这个目录是什么额，明明没有这个目录的但是PATH变量后面添上这个后就能找的到scott@scott-virtual-machine:~/scripts$ cat sh01.sh #!/bin/bash#Program:# This program shows "Hellow World!" in your screen.#History:#2017/02/23 Scott First releasePATH=$PATH:~/binexport PATHecho -e "Hellow World! \n"exit 0 运行后我用echo显示了下PATH变量是这个样子scott@scott-virtual-machine:~/scripts$ echo $PATH/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/scott/scripts搞不清楚~/bin  出来以后为什么变成了:/home/scott/scripts  ，想问问这个~/bin是什么呢 新人求助，请大神解惑，我查了半天没查到这个问题