临时更改当前工作目录在bash运行一个命令 [英] Temporarily change current working directory in bash to run a command

问题描述

我知道我可以使用 CD 命令来改变我的工作目录在bash。

但是，如果我这样做的命令：

  CD SOME_PATH和放大器;＆安培; run_some_command
 

然后，工作目录将永久改变。是否有某种方式来改变工作目录只是暂时这样？

  PWD = SOME_PATH run_some_command
 

解决方案

您可以通过内附的命令行中的一对运行 CD 和可执行的子shell括号：

 （CD SOME_PATH＆放大器;＆安培; exec_some_command）
 

演示：

  $ PWD
/家/作者Abhijit
$（CD / tmp目录和放大器;＆安培; PWD）＃目录中的子shell改变
/ tmp目录
$ PWD＃父shell的PWD还是一样
/家/作者Abhijit
 

I know I can use cd command to change my working directory in bash.

But if I do this command:

cd SOME_PATH && run_some_command

Then the working directory will be changed permanently. Is there some way to change the working directory just temporarily like this?

PWD=SOME_PATH run_some_command

解决方案

You can run the cd and the executable in a subshell by enclosing the command line in a pair of parentheses:

(cd SOME_PATH && exec_some_command)

Demo:

$ pwd
/home/abhijit
$ (cd /tmp && pwd)  # directory changed in the subshell
/tmp 
$ pwd               # parent shell's pwd is still the same
/home/abhijit

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