[oh-my-zsh] How to Fix 'Insecure completion-dependent directories detected'

Resolving oh-my-zsh's Insecure completion-dependent directories warning with chmod 755.

[Zsh] oh-my-zsh Installation and Configuration Method

Installing oh-my-zsh, enabling plugins and custom configs, and dodging the PATH pitfall.

Solution for oh-my-zsh 'The `osx` plugin is deprecated and has been renamed to `macos`'

Fixing the oh-my-zsh warning about the deprecated osx plugin by renaming it to macos in .zshrc.