step 1 : Add Intellij to your root path

I am assuming you have IntelliJ IDEA Community Edition

echo 'export PATH="/Applications/IntelliJ IDEA CE.app/Contents/MacOS:$PATH"' >> ~/.zshrc

Step 2 : Reload your shell by using 👇

source ~/.zshrc

Step 3 : Verify path by using 👇

which idea

it should be show something like this "/Applications/IntelliJ IDEA CE.app/Contents/MacOS/idea"

Step 4 : Open a project by moving to the directory and hit 👇

idea . (open current folder)

Note: All command are in bold