How do I update a formula with Homebrew? - homebrew

Question

How do I update a formula?
I ran brew update. However, mongodb is still outdated according to brew outdated:
mongodb (1.4.3-x86_64 < 1.6.5-x86_64)

Answer 1

First, update brew's internal list of formulae to the latest:
brew update
To upgrade only the mongodb formula, use install:
brew install mongodb
To upgrade all outdated formulae:
brew upgrade

Answer 2

You can update all outdated packages like so:
brew install `brew outdated`
or
brew outdated | xargs brew install
or
brew upgrade
This is from the brew site..
for upgrading individual formula:
brew install formula-name && brew cleanup formula-name

Answer 3

You will first need to update the local formulas by doing
brew update
and then upgrade the package by doing
brew upgrade formula-name
An example would be if i wanted to upgrade mongodb, i would do something like this, assuming mongodb was already installed :
brew update && brew upgrade mongodb && brew cleanup mongodb

Answer 4

Well, I just did
brew install mongodb
and followed the instructions that were output to the STDOUT after it finished installing, and that seems to have worked just fine. I guess it kinda works just like make install and overwrites (upgrades) a previous install.

Answer 5

You can't use brew install to upgrade an installed formula. If you want upgrade all of outdated formulas, you can use the command below.
brew outdated | xargs brew upgrade

Answer 6

I prefer to upgrade all homebrew formulae and homebrew cask formulae.
I added a Bourne shell function to my environment for this one (I load a .bashrc)
function updatebrew() {
set -x;
brew update;
brew cleanup;
brew cask upgrade --greedy
)
}
set -x for transparency: So that the terminal outputs whatever Homebrew is doing in the background.
brew update to update homebrew formulas
brew cleanup to remove any change left over after installations
brew cask upgrade --greedy will install all casks; both those with versioning information and those without