How to tell if homebrew is installed on Mac OS X

ruby-on-rails macos homebrew
Kmb40 picture Kmb40 · Feb 5, 2014 · Viewed 146k times · Source

I am doing some Rails programming and I consistently see Homebrew referenced in solutions around the web but have never used it.

I also notice Homebrew in the terminal version 2.9 as an option next to "Shell -> New" from the terminal drop down but when I select homebrew and issue commands, they fail.

Usually with the "command not found" error.

Strangely enough I have been unable to locate a simple command to determine whether brew is installed or not.

How do I check to see if Homebrew is already installed on my Mac?

Answer

bmargulies picture bmargulies · Feb 5, 2014

brew help. If brew is there, you get output. If not, you get 'command not found'. If you need to check in a script, you can work out how to redirect output and check $?.

Related questions

Postgres could not connect to server

After I did brew update and brew upgrade, my postgres got some problem. I tried to uninstall postgres and install again, but it didn't work as well. This is the error message.(I also got this error message when I …

Read More
'sudo gem install' or 'gem install' and gem locations

Running 'sudo gem list --local' and 'gem list --local' give me differing results. My gem path is set to my home folder and only contains the gems from 'gem list --local'. It's probably not good to have gems installed in …

Read More
warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777

Every time I run this command rails server: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777 I searched for a solution here and they said to type: chmod go-w /usr/local/bin But I get this error: …

Read More