如何在 Unix shell 中将 pwd 定义为变量 [英] How to define pwd as a variable in Unix shell

问题描述

我尝试了以下方法，但没有奏效.

I tried the following but it didn't work.

dir=$pwd
echo $dir

/bin/env/####/ --id --edition dir- $dir

我想将当前工作目录粘贴到上述脚本中.

I want to paste the current working directory into the above script.

推荐答案

当前目录已经在一个名为 PWD 的变量中，它是 由shell自动设置:

The current directory is already in a variable, called PWD, and it is automatically set by the shell:

echo "$PWD"

您还可以:

dir=$(pwd)
echo "$dir"

或者您可以在脚本中使用这些，而无需存储在其他变量中:

Or you could use these in your script without storing in additional variables:

/bin/env/####/ --id --edition-dir "$PWD"
/bin/env/####/ --id --edition-dir "$(pwd)"

供您参考:每次更改目录时，无论是在交互式 shell 还是脚本中，shell 都会将 PWD 变量的值设置为当前目录，并将 的值设置为OLDPWD 到上一个目录.

For your information: every time you change directory, whether in an interactive shell or a script, the shell sets the value of the PWD variable to the current directory, and the value of OLDPWD to the previous directory.

嗯，通常.正如 @WilliamPursell 指出的那样，OLDPWD 不是标准的，所以它可能不可用在所有壳中.

Well, usually. As @WilliamPursell pointed out, OLDPWD is not standard, so it might not be available in all shells.

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