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So Wikipedia (link) tells me that the command pwd is short for "print working directory", and that makes sense. But for the environment variable, the "P" has to be an acronym for something else t...
To print current/present working directory environment variable $PWD and command pwd are available. So, What is difference in usage of both? or What should be chose ...
If bash encounters $(pwd) it will execute the command pwd and replace $(pwd) with this command's output. $PWD is a variable that is almost always set. pwd is a builtin shell command since a long time.
Is it better to use $ (pwd) or $PWD? - Unix & Linux Stack Exchange
In cases where PWD is set to the pathname that would be output by pwd -P, if there is insufficient permission on the current working directory, or on any parent of that directory, to determine what that pathname would be, the value of PWD is unspecified. Assignments to this variable may be ignored.
What is the difference between cwd and pwd? I've tried googling it, and one of the answers mentioned that depending on some factor (which I sadly do not remember), the implementation (the code I'm assuming) is not the same?
Does the command pwd in a shell script output the directory the shell script is in?
Are there any merits of the cd ... && pwd approach over the dirname -only approach? It seems like it's just performing extra steps to achieve the exact same result, but I want to make sure there's not some nuance I'm missing.