Mac – Bash problem Mac OS Terminal

Your prompt is messed up, specifically PS1:

PS1=$[\033]0;37m]

that's missing a lot of escape characters (\e[) needed for the colors (and most useful parameters for a PS1). That's also why you get the 37m in the terminal window title. Try setting it to something different by running:

export PS1="\e[0;31m[\h:\W \u]\$\e[m "

and see if that works. It should give a red (thats \e[0;31m) prompt showing hostname (\h), current working directory (\W) and logged in user (\u) inside brackets [] and the bash exit status of the previous command (\$). Note that at the end the color is reset to the default of the session with \e[m .

If the above worked, you only have to find out from which configuration file your "bad" PS1 comes from: look for an "export PS1=" line in ~/.profile, ~/.bash_profile, ~/.bashrc, (as M K already suggested in his answer) and put in the above version.

There are a lot of answers around here with helpful colors codes and inputs for configuring the PS1, like this one for example.

The fix I ended up was removing all home brew Python and fixing up the system Python.

brew remove python
brew remove python3
brew cleanup

Check for the system pip and python (or absence of pip is OK too).

which python
which pip
which pip3
which python3

At this point, you need to easy_install a system based pip:

sudo easy_install --upgrade pip
pip --version

You should now have a pip that's based on /Library/Python (and pip 7.1.2 against python 2.7 for El Capitan in October 2015)

mac:~ me$ pip --version
pip 7.1.2 from /Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg (python 2.7)
mac:~ me$ which pip
/usr/local/bin/pip
mac:~ me$ which python
/usr/bin/python