我怎样才能cd进入使用脚本目录？ [英] How can I cd into a directory using a script?

问题描述

例如，假设我有一个名为tmp目录，我的主目录

For example, let's say I have a directory called tmp and I am on the home directory

$pwd
/my/home/directory/
$ls
tmpdir

和我有一个tmp.sh的CDS进入TMP目录

and I have a tmp.sh that cds into the "tmp" directory

#!/bin/bash
cd tmp

和我使用运行脚本：

$sh tmp.sh

运行此脚本后，我仍然在我的主目录。

after running this script, I am still in my home directory.

1），我想知道为什么，这并不摸底工作（我只大致知道它有带小孩的过程，是独立于父进程做（这是甚至对不对？））
和

1) I want to understand why this doesn't work thoroughly(I just roughly know it has to do with children process that is independent of parent process(is this even right?)) and

2），我该怎么去完成这个任务（即在目录中结束，一个脚本CD-ED在脚本执行）完成后？

2) how can I go about accomplishing this task(being end up in the directory that a script cd-ed in upon the completion of execution of the script)?

推荐答案

这是你的shell的工作目录。当你执行一个脚本，为您的脚本创建一个新的外壳。您正在改变present您code的休息，而不是父shell的工作目录。

That's the working directory of your shell. When you execute a script a new shell is created for your script. You are changing the present working directory for rest of your code and not the parent shell.

2），我该怎么去完成这个任务（即在目录中结束，一个脚本CD-ED在脚本执行）完成后？

2) how can I go about accomplishing this task(being end up in the directory that a script cd-ed in upon the completion of execution of the script)?

要做到这一点，你可以＆放大器;＆安培; 你的脚本。因此，如果脚本执行成功那么只有你在新目录中结束的

To accomplish this you can && you script. So if the script executes successfully then only you end up in the new directory as

./tmp.sh && cd <to_your_directory>

您也应该通过unix.se后 - 为什么CD不是一个程序以更好地理解

You should also go through the unix.se post - Why cd is not a program? for better understanding.

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