How to examine processes in OS X's Terminal?

Running ps -e does the trick. Found the answer here.

You can just use top It will display everything running on your OSX

Using top and ps is okay, but I find that using htop is far better & clearer than the standard tools Mac OS X uses. My fave use is to hit the T key while it is running to view processes in tree view (see screenshot). Shows you what processes are co-dependent on other processes.

You can install it from Homebrew using:

brew install htop

And if you have Xcode and related tools such as git installed on your system and you want to install the latest development code from the official source repository—just follow these steps.

First clone the source code from the htop GitHub repository:

git clone [email protected]:hishamhm/htop.git

Now go into the repository directory:

cd htop

Run autogen.sh:

./autogen.sh

Run this configure command:

./configure

Once the configure process completes, run make:

make

Finally install it by running sudo make install:

sudo make install