This is the answer you’ve been looking for. Ever since I installed Oh My Zsh on my Mac, I’ve been greeted by the following message whenever I launch Terminal:
[Oh My Zsh] Would you like to check for updates?
Type Y to update oh-my-zsh: Y
/bin/sh: /tools/upgrade.sh: No such file or directory
I never really cared about it, thinking I’d eventually upgrade the whole thing. Except that today when I did try to upgrade I received this message:
You already have Oh My Zsh installed. You'll need to remove ~/.oh-my-zsh if you want to install
A quick internet search for updating zshell led me to the answer deep within the oh-my-zsh git page.
The quick solution is to add
export ZSH=$HOME/.oh-my-zsh to your ~/.zshrc file. Save and then
source ~/.zshrc. Answer Y to update and everything should work perfectly.