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What is this directory "$(brew --prefix)"? (homebrew)

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Operating Systems OS X (Apple) What is this directory "$(brew --prefix)"? (homebrew)
# 1  
Old 06-08-2011
What is this directory "$(brew --prefix)"? (homebrew)


I installed the package manager called homebrew a few days ago. Everything seems to be working fine but today I've just noticed this funny looking directory $(brew --prefix). I'm not sure if I made a mistake and duplicated this directory from somewhere else, or if it's suppose to be there.
MBP:~ m$ pwd
MBP:~ m$ ls -ltr
total 40
  ...other files and dirs
drwxr-xr-x   8 m     staff   272 Jun  8 03:49 $(brew --prefix)
MBP:~ m$ ls $(brew --prefix)
Cellar    Library bin       etc       include   lib       share

Executing the the brew commands "Display the real path to your Homebrew prefix" and "Display the real path to your Homebrew Cellar
MBP:~ m$ brew --prefix
MBP:~ m$ brew --cellar

So Looking at this, is /Users/m/$(brew --prefix) a redundant duplicate I somehow made which I can now delete? Or is that dollar sign in front of a directory name meaning something else I am not understanding?

Thanks, Michelle
# 2  
Old 06-08-2011
It looks like an installer error, the $(...) notation is similar to the `...` backtick notation. Try
touch homedir \$\(brew\ --prefixs\)
ls $(brew-prefix)

If homedir is in the listing then your shell doesn't support the $(...) expansion (though it should as this is in the Posix std AFAIK
# 3  
Old 06-08-2011
Originally Posted by Skrynesaver
If homedir is in the listing then your shell doesn't support the $(...) expansion (though it should as this is in the Posix std AFAIK
Thanks Skrynesaver. Yes homedir was there I'm afraid.

I went ahead and deleted the directory. Homebrew appears to be working as per usual (so far).
MBP:~ m$ which brew
MBP:~ m$ brew --version

# 4  
Old 06-10-2011
Unless you changed your shell to something else, MacOS's default shell (bash) quite definitely supports $() notation.

On shells that don't support it, it would be a syntax error, it wouldn't just use it literally. They'd have to put it into single quotes or escape everything to make it do that.

So I suspect a bad script or typing mistake, not an incompatible shell.

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