Re^3: Getting the absolute path of a script, without PWD (update)

You've replied to my update without reading it.

getcwd and cwd are different and it's clearly documented

Cheers Rolf
_{(addicted to the Perl Programming Language :)

Wikisyntax for the Monastery}

Comment on Re^3: Getting the absolute path of a script, without PWD (update)

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Re^4: Getting the absolute path of a script, without PWD (update) by perlancar (Hermit) on Jul 15, 2021 at 23:45 UTC
I've tested both `cwd()` and `getcwd()` before, and looked at the source. They both resolve symlinks. And the `pwd` and `PWD` variable from bash are not the same. UPDATE:Okay, so when we type `pwd` in bash by default we get the shell builtin, not the external Unix utility (`/bin/pwd` on my system). And the shell's `pwd` defaults to -L (logical) and we get the bash PWD. The external Unix utility defaults to -P (physical) which resolves symlinks. And if we run /bin/pwd -L, it still retrieves from PWD environment variable. Confirming my original question, we do need PWD and there's no way in Perl we can get the same version without PWD.	[reply]

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Re^4: Getting the absolute path of a script, without PWD (update)
by perlancar (Hermit) on Jul 15, 2021 at 23:45 UTC

cwd()

getcwd()

pwd

PWD

UPDATE:Okay, so when we type pwd in bash by default we get the shell builtin, not the external Unix utility (/bin/pwd on my system). And the shell's pwd defaults to -L (logical) and we get the bash PWD. The external Unix utility defaults to -P (physical) which resolves symlinks. And if we run /bin/pwd -L, it still retrieves from PWD environment variable. Confirming my original question, we do need PWD and there's no way in Perl we can get the same version without PWD.

[reply]