bash 脚本 - “ls ..”（带有双点的 ls）有什么作用？
[英]bash scripting - what does "ls .." (ls with double dot) do?
问题描述
My homework asked me to find what ls .. does.
我的作业要求我找出ls ..作用。
I tried to search the internet but I couldn't find any answer to the question.我试图在互联网上搜索，但我找不到任何问题的答案。
Does someone know what this command does?有人知道这个命令是做什么的吗？
1 个解决方案
解决方案1
-1 已采纳 2019-02-21 17:27:04
.. is an entry in the current directory that refers to the parent of the current directory. ..是当前目录中的一个条目，它指的是当前目录的父目录。 It's not a special convention used just by ls .这不是仅由ls使用的特殊约定。 For example:例如：
$ cd /usr/bin
$ pwd
/usr/bin
$ cd ..
$ pwd
/usr
$ [ -d .. ] && echo "It's a directory"
It's a directory
$ stat ..
<output specific to your installed version of stat>
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